secx secx sin x cos x Choose the sequence of steps below that verifies the identity OA identity OB O C 1 secx secx sin x sec x 1 sin x COS X secx secx sin x secx cx sin x 1 2 secx sec x sin x secx 1 sin x OD secx secx sin 2x 1 sin x cos x 1 COS X cos x cos x 1 cos x cos X COS X COS X COS X