Over a Two-Year Period,Beneful Product's Gross Profit Percentage Went from 70.4

Multiple Choice

Over a two-year period,Beneful Product's gross profit percentage went from 70.4% to 69.7%.Which of the following could not have been the cause of this change?

A) Reduced selling prices
B) Rising product cost as a percentage of sales
C) Increased competition from a competitor
D) An increase in selling price