Which Is a Not Requirement of a Custom Data Type

Multiple Choice

Which is a not requirement of a custom data type to be used in web services?

A) Any variables to be accessed during runtime must be declared WebVar.
B) The class with the web methods must provide a Public default constructor.
C) Properties and instance variables that should be serialized must be declared Public.
D) Properties that should be serialized must provide both get and set accessors.