Given:
1. public class TestString1{
2. public static void main(String[] args){
3. String str = "420";
4. str += 42;
5. System.out.print(str);
6. }
7. }
What is the output?
(A) 42
(B) 420
(C) 462
(D) 42042
(E) Compilation fails.
F. An exception is thrown at runtime.
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