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Question ID 3883

Given:
10.    class One {
11.    public One foo() { return this; }
12.    }
13.    class Two extends One {
14.    public One foo() { return this; }
15.    }
16.    class Three extends Two {
17.    // insert method here
18.    }
Which two methods, inserted individually, correctly complete the Three class? (Choose two.)
 

Option A

A.    public void foo() {}
 

Option B

B.    public int foo() { return 3; }
 

Option C

C.    public Two foo() { return this; }
 

Option D

D.    public One foo() { return this; }
 

Correct Answer C,D
Explanation


Question ID 3884

Option A

Explanation

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