Markdown Percentage Is Calculated By

Markdown percentage is calculated by:

A) dividing the amount of the reduction by the original selling price.
B) dividing the amount of the reduction by the original cost.
C) dividing the amount of the reduction by the price after the markdown.
D) dividing the amount of the reduction by difference between the cost and the original selling price.
E) dividing the amount of the reduction by the net sales.