Pls help

False 5 Multiple Answer 15 points Which of the following represent the correct derivative of f (x) - a cos x? Choose all that apply. O f' (a) = 322 cos x - 2' sin ac O f' (2) = 22 (3 cos x - x sin ac) O f (2) = x2 (3 cos xe + x sin ac) f' ( 20) = 3x2 sin ac O f (2) = -3x2 sin ac O f (x) = 3x2 cos x + 2 sin ac