A.In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();

B.In Line 2, change the access modifier to protectedprotected class Main {

C.In Line 1, remove the access modifierPerson() {

D.In Line 1, change the access modifier to privateprivate Person() {

E.In Line 1, change the access modifier to publicpublic Person() {

A.null

B.A NoSuchElementException is thrown at run time.

C.Duke

D.A NullPointerException is thrown at run time.

A.EUR -> 0.84
GBP -> 0.75
USD -> 1.00
CNY -> 6.42

B.The compilation fails.

C.CNY -> 6.42
EUR -> 0.84
GBP -> 0.75
USD -> 1.00

D.USD -> 1.00
GBP -> 0.75
EUR -> 0.84
CNY -> 6.42

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));

A.Hello world!Bonjour le monde!

B.Hello world!Hello world!

C.Bonjour le monde!Hello world!

D.Bonjour le monde!Bonjour le monde!