Select which of the following correctly describes a namespace to which the "Telephone_Number" element in the XML document below belongs.
<?xml version="1. 0"?>
<message xmlns="urn:sample:personal"
xmlns:application="urn:sample:Application"
xmlns:NameCard="urn:sample:NameCard">
<data>
<application:Application Date="2005/09/30">Address_Change</application:Application> <application:Change_Address>Bunkyo-ku_Tokyo_XXXX</application:Change_Address> <application:Applicant>Ichiro_Yamamoto</application:Applicant> <Department_Name>Sales_Department</Department_Name>
<Telephone_Number usage="Official" xmlns="">03-1111-1111</Telephone_Number>
</data>
</message>