Good Guess Co uses regression analysis to forecast monthly costs. The team has produced the following equation: YC = 4A + 600 Where A is the number of units produced each month and YC is the total cost in a month. Which of the following statements is correct? O a. Variable costs = $12 per unit, Fixed costs = $7,200 per month O b. Annual fixed costs = $28,800 O c. Variable costs = $600 per unit, Fixed costs = $4 per month O d. Annual fixed costs = $7,200