Which statements will cause a compile-time error in the following code?

Select the two correct answers.

(a) (1)

(b) (2)

(c) (3)

(d) (4)

(e) (5)

(f) (6)

public class MyClass { public static void main(String[] args) { MyClass a; MySubclass b; } a = new MyClass (); b = new MySubclass (); a = b; a; o P b new MySubclass (); b = new MyClass(); } |||| class MySubclass extends MyClass {} // (1) // (2) // (3) // (4) // (5) // (6)