Use the Information Below to Answer the Following Questions ?
-Assuming That the Company Uses the Perpetual Inventory System

Use the information below to answer the following questions.

Boxwood Company sells blankets for $60 each. The following was taken from the inventory records during May. The company had no beginning inventory on May 1.
$$\begin{array} { | c | l | c | c | } \hline \text { Date } & { \text { Blankets } } & \text { Units } & \text { Cost } \\\hline \text { May } 3 & \text { Purchase } & 5 & \$ 20 \\\hline 10 & \text { Sale } & 3 & \\\hline 17 & \text { Purchase } & 10 & 24 \\\hline 20 & \text { Sale } & 6 & \\\hline 23 & \text { Sale } & 3 & 30 \\\hline 30 & \text { Purchase } & 10 & \\\hline\end{array}$$ ?
-Assuming that the company uses the perpetual inventory system, determine the cost of merchandise sold for the sale of May 20 using the FIFO inventory cost method.

A) $120
B) $180
C) $136
D) $144