Roki IncUses the Periodic Inventory System ? How Many Units Did Roki, Inc

Roki Inc.uses the periodic inventory system. June $\begin{array}{rlr}1 & \text { On hand, 50 units @ \$15.00 each } & \$ 750.00 \\5 & \text { Purchased 115 units @, \$15.10 each } & 1,736.50 \\14 & \text { Purchased 75 units @ \$15.20 each } & \underline{1,140.00} \\& \text { Total cost of goods available for sale } & \underline{\$ 3.626 .50}\\30&\text { On hand, } 90 \text { units }\\\end{array}$ ? How many units did Roki, Inc.sell during June?

A) 90
B) 100
C) 150
D) 50