Assume that wilymarketer is running an email campaign to acquire new customers. it is considering two options: review the following option choices. option a would use a high quality rental list of 100,000 email addresses. direct costs under this option would be the rental list at $250 cpm and creative, program management and reporting costs will be $10,000. if the email campaign brings in 623 new customers, what is its approximate customer acquisition cost? option b would rely on banner advertising at $20 cpm, which has a predicted click-through rate of 1.5 percent. the campaign is designed to reach 100,000 viewers, and its creative, program management and reporting costs will be $10,000. how many customers will it bring in and what is the approximate customer acquisition cost? based on the cost calculations which option would you recommend? would you consider anything else for recommending a particular option apart from the costs?