The marketing manager for Mountain Mist soda needs to decide how many TV spots and magazine ads to run during the next quarter. Each TV spot costs $5000 and is expected to increase sales by 300,000 cans. Each magazine ad costs $2000 and is expected to increase sales by 500,000 cans. A total of $100,000 may be spent on TV and magazine ads; however, Mountain Mist wants to spend no more than $70,000 on TV spots and no more than $50,000 on magazine ads. Mountain Mist earns a profit of $0.05 on each can it sells. Which of the following are the decision variables for this problem, in words? (Select all correct, but no incorrect, answers for full credit.) Select one or more: a. number of cans to be sold during the next quarter b. number of TV spots to run during the next quarter C. amount of profit made from the sale of cans d. number of magazine ads to run during the next quarter