Her current campaign has a total investment of $25,500, generates 1,500 conversions, and has a CPA of $17. Which plan, built in the Performance Planner, will help Molly with her marketing goal to generate more sales?a. An investment of $40,000 to generate 2,000 conversions and a CPA of $20
b. An investment of $30,000 to generate 1,500 conversions and a CPA of $20
c. An investment of $28,000 to generate 1,400 conversions and a CPA of $20
d. An investment of $21,000 to generate 1,400 conversions and a CPA of $15