Use the Data Given Below to Answer the Following Questions)

Use the data given below to answer the following questions) .
The table below provides the sales data for JD Inc. for the year 1998. Given: α = 0.2, β = 0.15, and γ = 0.05 Hint: Use an additive Holt-Winters model.) $$\begin{array}{l}\text { Umbrella Sales of JD Inc. }\\\begin{array} { | c | c | c| } \hline \text { Year } & \text { Month } & \text { Units } \\\hline 1 & \text { Jan } & 3980 \\\hline 1 & \text { Feb } & 4000 \\\hline 1 & \text { Mar } & 4740 \\\hline 1 & \text { April } & 4720 \\\hline 1 & \text { May } & 4920 \\\hline 1 & \text { Jul } & 5140 \\\hline 1 & \text { July } & 4640 \\\hline 1 & \text { Aug } & 4520 \\\hline 1 & \text { Sep } & 4480 \\\hline 1 & \text { Oct } & 4690 \\\hline 1 & \text { Nov } & 4210 \\\hline 1 & \text { Dec } & 4418 \\\hline 2 & \text { Jan } & 4380 \\\hline 2 & \text { Feb } & 4400 \\\hline 2 & \text { Mar } & 5140 \\\hline 2 & \text { April } & 5120 \\\hline 2 & \text { May } & 5320 \\\hline 2 & \text { JuI } & 5540 \\\hline 2 & \text { July } & 5040 \\\hline 2 & \text { Aug } & 4920 \\\hline 2 & \text { sep } & 4880 \\\hline 2 & \text { Oct } & 5090 \\\hline 2 & \text { Nov } & 4610 \\\hline 2 & \text { Dec } & 4818 \\\hline\end{array}\end{array}$$
-What is the value of the mean absolute deviation for the given data?

A) 8.10
B) 340.73
C) 14.82
D) 7.62