7. You run both a search-ad campaign and a click-and-conversion display ad campaign for a product that your firm markets. The results of both campaigns are detailed below. The margin of each unit of product sold is $383, and consumers typically buy only one unit of the product at a time. Based on the return on investment of each campaign, which ad campaign is more effective for your firm in this case? Impressions Clicks Transactions | Click-Through Rate Conversion Rate Media Spending $125,000 3,436,481 137,482 2 ,392 4.00% 1.74% Display Ad Campaign Media Impressions Spending $93,500 28,956,632 Clicks Transactions Click-Through Rate Conversion Rate 10,874 858 0.038% 7.89% a. The search ad campaign is more profitable. __b. The display ad campaign is more profitable. c. Both ad campaigns are equally profitable. d. It is impossible to determine which ad campaign is more profitable from this data