Read XMl using Linq returning empty object

I am trying to read a xml

Sample XML

<customer-list>
   <customer>
      <FirstName>B</FirstName>
      <LastName>C</LastName>
      <Email></Email>
      <OptInEmail>1</OptInEmail>
      <Phone>9056953000</Phone>
      <Address1></Address1>
      <Address2>70 East Beaver Creek Rd</Address2>
      <City>Richmond Hill</City>
      <State>ON</State>
      <ZipCode>L4B3B2</ZipCode>
      <CountryCode>CA</CountryCode>
   </customer>
   <customer>
    <FirstName>P</FirstName>
    <LastName>M</LastName>
    <Email></Email>
    <OptInEmail>1</OptInEmail>
    <Phone>7045955246</Phone>
    <Address1>Residence Inn</Address1>
    <Address2>55 Minthorn Blvd</Address2>
    <City>Markham</City>
    <State>ON</State>
    <ZipCode>L3T7Y9</ZipCode>
    <CountryCode>CA</CountryCode>
   </customer>  
</customer-list>

Reading Code

public void ReadXml(string path)
        {
            var xdoc = XDocument.Load(path);
            var customer = from node in xdoc.Descendants("customer")
                            select new
                            {
                                FirstName = (string)node.Attribute("FirstName").Value,
                                LastName = (string)node.Attribute("LastName").Value,
                                Email = (string)node.Attribute("Email").Value,
                                OptInEmail = (string)node.Attribute("OptInEmail").Value,
                                Phone = (string)node.Attribute("Phone").Value,
                                Address1 = (string)node.Attribute("Address1").Value,
                                Address2 = (string)node.Attribute("Address2").Value,
                                City = (string)node.Attribute("City").Value,
                                State = (string)node.Attribute("State").Value,
                                ZipCode = (string)node.Attribute("ZipCode").Value,
                                CountryCode = (string)node.Attribute("CountryCode").Value
                            };

            foreach (var item in customer)
            {
                var test = item.FirstName;
            }
        }

but every time i try to access it , Cutomer is empty. No values read from xml?? Any suggestion