Axme Uses a Weighted Average Perpetual Inventory System

Multiple Choice

Axme uses a weighted average perpetual inventory system. August 2, 10 units were purchased at $12 per unit.
August 18, 15 units were purchased at $15 per unit.
August 29, 20 units were sold.
August 31, 14 units were purchased at $16 per unit.
What is the per-unit value of ending inventory on August 31?

A) $12.00.
B) $13.80.
C) $15.42.
D) $16.00.
E) $17.74.