Your Company, Beads and Baubles, Manufactures and Sells Beaded Jewelry-Making

Your company, Beads and Baubles, manufactures and sells beaded jewelry-making supplies online. To introduce your latest line of handcrafted beads, you set up four variations of an ad. They all had the same text and offer, but each had a different image. After analyzing the results of your test to see which ad had the best click-through rate, you determine it was: ​

A) ad A: 250 ad clicks, 10,000 ad impressions.
B) ad B: 140 ad clicks, 10,000 ad impressions.
C) ad C: 250 ad clicks, 5,000 impressions.
D) ad D: 100 ad clicks, 3,000 impressions.