A.Good Morning, Potter

B.Good Night, Potter

C.Good Morning, Harry

D.Good Night, Harry

A.super.set(List<String> map)

B.map.forEach((k, v) -> set(v)));

C.set(map.values());

D.set(map)

E.super.set(map.values());

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.f2.foo(li) prints Hola Mundo!

B.f1.foo(li) prints Hola Mundo!

C.f2.foo(li) prints Hello world!

D.b1.foo(li) prints Hola Mundo!

E.f1.foo(li) prints Bonjour le monde!

F.b1.foo(li) prints Bonjour le monde!

G.b1.foo(li) prints Hello world!

H.f2.foo(li) prints Bonjour le monde!

I.f1.foo(li) prints Hello world!

A.double avg = numbers.stream().parallel().averagingDouble(a -> a);

B.double avg = numbers.parallelStream().mapToInt (m -> m).average().getAsDouble ();

C.double avg = numbers.stream().mapToInt (i -> i).average().parallel();

D.double avg = numbers.stream().average().getAsDouble();

E.double avg = numbers.stream().collect(Collectors.averagingDouble(n -> n));