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.