Jackie's Snacks Sells Fudge, Caramels, and Popcorn

Jackie's Snacks sells fudge, caramels, and popcorn. It sold 12,000 boxes last year. Popcorn outsold fudge by a margin of 2 to 1. Sales of caramels were the same as sales of popcorn. Fixed costs for Jackie's Snacks are $14,000 and additional information follows: The formula to determine the number of boxes of each snack sold is

A) 3x + 2x + x = 12,000.
B) x + y + z = 12,000.
C) x + 4x = 12,000.
D) none of the above.