What Is the Output of Running Class C

What is the output of running class C?
class A {
public A() {
System.out.println(
"The default constructor of A is invoked");
}
}
class B extends A {
public B() {
System.out.println(
"The default constructor of B is invoked");
}
}
public class C {
public static void main(String[] args) {
B b = new B();
}
}
a. none
b. "The default constructor of B is invoked"
c. "The default constructor of A is invoked" followed by "The default constructor of B is invoked"
d. "The default constructor of A is invoked"