The following table gives the QR company data for seven $(7)$ years; from $2015$ to $2021.$

Actual

YEAR Sales

Which of the following displays the MAD for the $3-$period Simple Moving Average and the Weighted Moving Average forecasting methods

respectively, which were used to forecast from $2018$ to $2021.$

a$.10\mathrm{.}7$ I $11\mathrm{.}5$

b$.3\mathrm{.}00,13\mathrm{.}10$

c$.11\mathrm{.}3311\mathrm{.}5$

d$.2\mathrm{.}83,2\mathrm{.}88$