public abstract interface Frobnicate { public void twiddle(String s); }Â _x005F_x000D_ Which is a correct class?

public class Frob extends Frobnicate { public void twiddle(Integer i) { } }

public abstract class Frob implements Frobnicate { public abstract void twiddle(String s) { } }

public abstract class Frob implements Frobnicate { }

public class Frob implements Frobnicate { public void twiddle(Integer i) { } }

public abstract interface Frobnicate { public void twiddle(String s);

1.	public abstract interface Frobnicate { public void twiddle(String s); }Â _x005F_x000D_ Which is a correct class?
A.	public abstract class Frob implements Frobnicate { public abstract void twiddle(String s) { } }
B.	public abstract class Frob implements Frobnicate { }
C.	public class Frob extends Frobnicate { public void twiddle(Integer i) { } }
D.	public class Frob implements Frobnicate { public void twiddle(Integer i) { } }
Answer» C. public class Frob extends Frobnicate { public void twiddle(Integer i) { } }

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public abstract interface Frobnicate { public void twiddle(String s); }Â _x005F_x000D_ Which is a correct class?

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