You are creating a class that performs complex financial calculations. The class contains a method named GetCurrentRate that retrieves the current interest rate and a variable named currRate that stores the current interest rate.You write serialized representations of the class.You need to write a code segment that updates the currRate variable with the current interest rate when an instance of the class is deserialized. 
Which code segment should you use？（）

A.A
B.B
C.C
D.D