2. We want to know customers' profitability for the months of June through August as of the beginning of June using the CLV. Let the gross profits be 30% of the purchase amount. ABC Sportswear has three ways of contacting customers with marketing messages: (a) through email campaigns guided to the online store, (b) by directly mailing catalogs to customers and (c) selling through telephone call-ins. For the month of June through August, the cost of contacting a customer once via email is $0.25, via direct mailers is $1 and via telephone calls is $3. In each month during January to May, Customers 1, 2 and 3 are contacted via email 2 times, and direct mail 5 times. Customers 4, 5 and 6 receive email 1 time, and telephone calls 3 times per month.