100 POINTS !!!!!
Michael has a lunch account at the cafeteria. Michael can estimate the amount of money left in his lunch account using the equation y = 48 - 5x, where x represents the number of days he eats lunch. What is the meaning of the slope in the equation?

A. Michael has $48 in his lunch account.

B. Michael spends $5 per day eating lunch at the cafeteria.

C. Michael has $43 in his lunch account after eating one day.

D. Michael spends $10 of his lunch account after eating two days.