Given the attached data. Answer the following questions for a $8$ period moving average.

$16.x|sx$ darr$|$

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

$TS\frac{?}{S}=UM\frac{A-F}{M}AD$

MSE $=$ Average $(A-F{)}^2$

Compute your forecast for period $51.$

The potential answers are:

A: $4507\mathrm{.}63$ units.

B: $5343\mathrm{.}25$ units.

C: $7830$ units.

D: $5296\mathrm{.}8$ units.

E: $6295\mathrm{.}2$ units.