單項選擇題

public class ExceptionTest { 
class TestException extends Exception {} 
public void runTest () throws TestException {} 
public void test () /* Point X*/  { 
runTest (); 
} 
}  
At point X on line 4, which code can be added to make the code compile?()

A. Throws Exception.
B. Catch (Exception e).
C. Throws RuntimeException.
D. Catch (TestException e).
E. No code is necessary.

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