Instruction 14-2
the Following Table Contains the Number of Complaints

Instruction 14-2
The following table contains the number of complaints received in a department store for the first six months of last year.
$$\begin{array} { c c } \text { Month } & \text { Complaints } \\\text { January } & 36 \\\text { February } & 45 \\\text { March } & 81 \\\text { April } & 50 \\\text { May } & 108 \\\text { June } & 144\end{array}$$
-Referring to Instruction 14-2,if a three-term moving average is used to smooth this series,what would be the second calculated value?

A) 36
B) 72
C) 54
D) 40.5