The formula for calculating customer lifetime value discussed in the lecture implies that a customers lifetime value can be increased by: Group of answer choices: a.Cross-selling (selling more products), Selling less expensive slow moving products, Reducing MC over time as customer loyalty is better established, Increasing the number of time periods (t) that the customer purchases b.Cross-selling (selling more products), Up-selling (selling more expensive products), Reducing MC over time as customer loyalty is better established, Increasing the number of time periods (t) that the customer purchases c. Cross-selling (selling more products), Reducing MC over time as customer loyalty is better established, Escalating customer contact, Selling less expensive slow moving products