4. One explanation for the observation that tieket prioes on StubHub decrease as the game gets closer is: (a) Demand for tickets increases over time. {1}} Supply in for tickets decreases over time. (o) The option value of not selling the ticket today or equivalently, the oppor tunity east of selling the ticket today, is decreasing. {d} Consumers with high willingnesstopay generale arrive late to the market. (e) Games are more likely to be sold out as the day of the game approaches