I need a professional answer for part b and c

Homework: Po... lon 6, Problem 4.6... Part 1 of 6 HW Score: 38.49%, 15.4 of 40 points O Points: 0 of 2 The monthly sales for Yazici Batteries, Inc., were as follows: Nov Month Sales Sept Oct 20 21 Dec 24 20 This exercise contains only parts 5 and c. b) Forecast January sales using each of the following methods. i) Compute the January sales forecast using naive method. The January sales forecast using the naive method = sales. (Enter your response as a whole number.)