An advantage of the weighted-average method is that:

A) it assigns an equal cost to each unit so net income does not fluctuate as much as with other methods.
B) it takes into account the number of units purchased at each amount, not a simple average cost.
C) it matches current selling prices and current costs.
D) Both A and B are correct.

The weighted-average method assigns a cost to each unit based on the average cost of all units available for sale during the period, taking into account the number of units purchased at each amount (not just a simple average). This method smooths out price fluctuations over the period, leading to less fluctuation in net income compared to methods that might assign costs based solely on the most recent purchase prices.