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У програмі наведено таке опис: abstract class A { abstract void method (in...

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У програмі наведено таке опис:

abstract class A {

abstract void method (int a, int b);

}

class B extends A {

int x;

int y;

void method (int a, int b) {

x = a;

y = b;

}

Які нижчеперелічені фрагменти коду допустимі?

A x; B y = new B (); x = y;

✅

A x = new B();

✅

жоден з перерахованих вище

❌

A x = new A (); B y = new B (); x = y;

❌

A x = new A (); x = new B ();

❌

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