ABC Inc is exploring two different forecasting methods. Below are the forecasts from each of the methods as well as the actuals.

Month

January February March April

Actual Method Method sales A B

$10\mathrm{.}513\mathrm{.}5121515\mathrm{.}7518$

$1514\mathrm{.}2513\mathrm{.}5151816\mathrm{.}65$

$6$ pts

a$)$ Evaluate the results of oth methods using MAD $(2$ points$)$ b$)$ Evaluate the results of both methods using MSE $(2$ points$)$ c$)$ Evaluate the results of oth methods using MAPE $(2$ points$)$ d$)$ Which method do you recommend? $(1$ point$)$