You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application uses the ADO.NET Entity Framework to model entities.
The conceptual schema definition language (CSDL) file contains the following XML fragment.

<EntityType Name=”Contact”>
…
<Property Name=”EmailPhoneComplexProperty” Type=”AdventureWorksModel.EmailPhone” Nullable=”false” />
</EntityType>
…
<ComplexType Name=”EmailPhone”>
<Property Type=”String” Name=”EmailAddress” MaxLength=”50″ FixedLength=”false” Unicode=”true” />
<Property Type=”String” Name=”Phone” MaxLength=”25″ FixedLength=”false” Unicode=”true” />
</ComplexType>

You write the following code segment. (Line numbers are included for reference only.)

01 using (EntityConnection conn = new EntityConnection(“name=AdvWksEntities”))
02 {
03 conn.Open();
04 string esqlQuery = @”SELECT VALUE contacts FROM
05 AdvWksEntities.Contacts AS contacts
06 WHERE contacts.ContactID == 3″;
07 using (EntityCommand cmd = conn.CreateCommand())
08 {
09 cmd.CommandText = esqlQuery;
10 using (EntityDataReader rdr = cmd.ExecuteReader())
11 {
12 while (rdr.Read())
13 {
14 …
15 }
16 }
17 }
18 conn.Close();
19 }

You need to ensure that the code returns a reference to a ComplexType entity in the model named EmailPhone.
Which code segment should you insert at line 14?

A.
int FldIdx = 0;
EntityKey key = record.GetValue(FldIdx) as EntityKey;
foreach (EntityKeyMember keyMember in key.EntityKeyValues)
{
return keyMember.Key + ” : ” + keyMember.Value;
}

B.
IExtendedDataRecord record = rdr[“EmailPhone”]as IExtendedDataRecord;
int FldIdx = 0;
return record.GetValue(FldIdx);

C.
DbDataRecord nestedRecord = rdr[“EmailPhoneComplexProperty”] as DbDataRecord;
return nestedRecord;

D.
int fieldCount = rdr[“EmailPhone”].DataRecordInfo.FieldMetadata.Count;
for (int FldIdx = 0; FldIdx < fieldCount; FldIdx++)
{
rdr.GetName(FldIdx);
if (rdr.IsDBNull(FldIdx) == false)
{
return rdr[“EmailPhone”].GetValue(FldIdx).ToString();
}
}