Show the output of running the class Test in the following code lines:

```
interface A {
}

class C {
}

class B extends D implements A {
}

public class Test {
public static void main(String[] args) {
B b = new B();
if (b instanceof A)
System.out.println("b is an instance of A");
if (b instanceof C)
System.out.println("b is an instance of C");
}
}

class D extends C {
}```
a. Nothing.
b. b is an instance of A.
c. b is an instance of C.
d. b is an instance of A followed by b is an instance of C.

d