S1: ifd is a positive divisor of n, the number of elements of order d in a cyclic group of order nis o(d). s2 leta be an element of order n in a group and letk

S1: Ifd is a positive divisor of n, the number of elements of order d in a cyclic group of order nis o(d). S2 Leta be an element of order n in a group and letk be a positive integer. Then a)(acd(nkb) (a) Sl is true and S2 is false c) S1 and S2 both are true (b) S2 is true and S1 is false (d) S1 and S2 both are false