e) [2 pts each] State the execution result (compile error, runtime error - ClassCastException, or no problem) for the following statements and explain the reason for the error cases. Each case is independent from each other. Suppose the method amethod is defined in the Class4. i) obji. anethodl ii) Interface3 obj5 = obj2; iii) $((Class 3) obj 3)$, aMethod ()$;$ iv) ((class4)obj4), amethod(); f) [4 pts] Suppose that method "void m2)\{U};" is in Abstract1. Which classes have to implement it? CS.VS.919