Which declaration can be inserted at (1) without resulting in a compile-time error?

Select the two correct answers.

(a) final double CIRCUMFERENCE = 2 * Math.PI * R;

(b) int TOTAL = TOTAL + R + S;

(c) int AREA = R * S;

(d) public static MAIN = 15;

(e) protected int CODE = 13082009;

interface MyConstants { int R = 42; int S = 69; // (1) INSERT CODE HERE }