Monarch Company Uses a Weighted-Average Perpetual Inventory System and Has

Multiple Choice

Monarch Company uses a weighted-average perpetual inventory system and has the following purchases and sales:
$$\begin{array} { | l | l | } \hline \text { January } 1 & 20 \text { units were purchased at } \$ 10 \text { per unit. } \\\hline \text { January } 12 & 12 \text { units were sold. } \\\hline \text { January 20 } & 18 \text { units were purchased at } \$ 11 \text { per unit. } \\\hline\end{array}$$
-
What is the value of cost of goods sold?

A) $278.
B) $272.
C) $126.
D) $398.
E) $120.