The chief scientists of a large online retailer had proposed to use data on users' online behaviors (pages visited, etc.) as well as demographics (when available) to (1) estimate whether a customer will make a purchase, and (2) estimate how much money a customer will spend if s/he were to make a purchase. Select the most correct and complete answer below: a. The first task (estimate whether a customer will make a purchase) is a regression task. b. The first task (estimate whether a customer will make a purchase) is a classification task. c. The second task (estimate how much money a customer will spend if s/he were to make a purchase) is a regression task. d. The second task (estimate how much money a customer will spend if s/he were to make a purchase) is a classification task. e. Both tasks are predictive tasks f. Answers b and c are correct g. Answers a, c, and e are correct h. Answers b, c, and e are correct i. Answers b, d, and e are correc