4. (2 points) Suppose f is a function, and for all X in the domain of f , we know that t(MOW) + f ($) = 582 What is f'(:v)? A. INC\") = 21 sec(1:)tan(:1:)+1 2.7:: B- 1W) = W c. f'(:c) = 2m sec2(f(m))+1 D. f'(:c) = 2:1: sec(:1:)tan(zr:) E. f'(zc) = 2r 5602(f(:v))