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Question:Which three are valid method signatures in an interface? 
1.	private int getArea();
2.	public float getVol(float x);
3.	public void main(String [] args);
4.	public static void main(String [] args);
5.	boolean setFlag(Boolean [] test);

A 1 and 2 
B 2, 3 and 5 
C 3, 4, and 5 
D 2 and 4

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Question:Which three are valid method signatures in an interface? 1. private int getArea(); 2. public float getVol(float x); 3. public void main(String [] args); 4. public static void main(String [] args); 5. boolean setFlag(Boolean [] test);

A 1 and 2

B 2, 3 and 5

C 3, 4, and 5

D 2 and 4

B