问题：

[单选]

Click the Exhibit button.

Given：

Which statement is true if a TestException is thrown on line 3 of class B？（）

A . Line 33 must be called within a try block.
B . The exception thrown by method 1 in class A is not required to be caught.
C . The method declared on line 31 must be declared to throw a runtime exception.
D . On line 5 of class A,the call to method 2 of class B does not need to be placed in a try catch block.