A.Implement AutoCloseable and override the autoClose method.

B.Extend AutoCloseable and override the close method.

C.Extend AutoCloseable and override the autoClose method.

D.Implement AutoCloseable and override the close method.

A.Remove the parameter from wheels method in line 3.

B.Add @Override annotation in line 2.

C.Replace the code in line 2 with Car ob = new Car();

D.Remove abstract keyword in line 1.

A.public String toString() { return String.valueOf(ALPHA.v); }

B.public String toString() { return String.valueOf(Letter.values()[1]); }

C.public String toString() { return String.valueOf(v); }

D.String toString() { return "200"; }

A.Option A

B.Option C

C.Option B

D.Option D

A.D inherits a() only from C.

B.D inherits a() from B and C but the return types are incompatible.

C.D does not define any method.

D.D extends more than one interface.