Which statement is true?

Given:
public final class IceCream {
public void prepare() {}
}
public class Cake {
public final void bake(int min, int temp) {}
public void mix() {}
}
public class Shop {
private Cake c = new Cake ();
private final double discount = 0.25;
public void makeReady () { c.bake(10, 120); }
}
public class Bread extends Cake {
public void bake(int minutes, int temperature) {}
public void addToppings() {}
}
Which statement is true?

A.
A compilation error occurs in IceCream.

B.
A compilation error occurs in Cake.

C.
A compilation error occurs in Shop.

D.
A compilation error occurs in Bread

E.
All classes compile successfully.