Let f(x) = cosx. Which of the following would you use to calculate f'(7/2) using the definition of derivative (i.e., first principles)? (A) lim sin(7/2 + h) - 1 (B) lim sin(-7/2 +h) +1 (C) lim cos( 7/2 + 12) (D) lim sin(1/2 + h) (E) lim cos(1/2 + h) h-0 h h-0 h h-0 h h-0 h h-0 h (F) lim cos(7/2 + h) -1 (G) lim cos(T/2 + h) + 1 (H) lim sin(*/2 + h) h-0 h h-0 h h-0 h