1. class A {  2. public byte getNumber （）  {  3.   return 1；  4.   }  5. }  6.    7. class B extends A {  8. public short getNumber（）  {  9.  return 2；  10. }  11.    12. public static void main （String args[]） {   13.    B  b = new B （）；  14.      System.out.printIn（b.getNumber（））     15.   }  16. }    What is the result？（）  

• A、 Compilation succeeds and 1 is printed.
• B、 Compilation succeeds and 2 is printed.
• C、 An error at line 8 causes compilation to fail.
• D、 An error at line 14 causes compilation to fail.
• E、 Compilation succeeds but an exception is thrown at line 14.