this has 6 parts. I need all the parts. please write LEGIBALLY.

a. Find the critical points of the following function on the given interval. b. Use a graphing utility to determine whether the critical points correspond to local maxima, local minima, or neither. c. Find the absolute maximum and minimum values on the given interval. f(0) = sin 0 + 5 cos 0, [ -2x,2x] a. Identify all the critical points. Select the correct choice below and fill in any answer boxes within your choice O A. 0= (Round to three decimal places as needed. Use a comma to separate answers as needed.) O B. There are no critical points