(Table: Studying and Total Utility) Use Table: Studying and Total Utility. Marginal utility: Table: Studying and Total Utility Hours of studying Total utility 0 0 1 5 2 15 3 23 4 29 5 33 a. initially increases but eventually stays constant as hours of studying increase. b. initially increases but eventually decreases as hours of studying increase. c. always decreases as hours of studying increase. d. initially decreases but eventually increases as hours of studying increase