Given the attached data. Answer the following questions for a $7$ period moving average.

$01.$xlsxDownload $01.$xlsx

MAD $=$ Average$(|$A$-$F$|)$

TS $=$SUM$($A$-$F$)/$MAD

MSE $=$ Average$($A$-$F$)2$

$1.$ Compute your forecast for period $51.$

The potential answers are:

A: $6012\mathrm{.}57$ units.

B: $11221\mathrm{.}6$ units.

C: $12461$ units.

D: $8020\mathrm{.}83$ units.

E: $4414$ units.