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Java.lang Class - Programming

Q1:

What will be the output of the program? 
interface Foo141 
{ 
    int k = 0; /* Line 3 */
} 
public class Test141 implements Foo141 
{
    public static void main(String args[]) 
    {
        int i; 
        Test141 test141 = new Test141(); 
        i = test141.k; /* Line 11 */
        i = Test141.k; 
        i = Foo141.k; 
    } 
}

A Compilation fails.

B Compiles and runs ok.

C Compiles but throws an Exception at runtime.

D Compiles but throws a RuntimeException at runtime.

ANS:A - Compilation fails.

The variable k on line 3 is an interface constant, it is implicitly public, static, and final. Static variables can be referenced in two ways: Via a reference to any instance of the class (line 11) Via the class name (line 12).