At a particular store, candy bars are normally priced at $1.00 each. last week, the store offered a promotion under which customers purchasing one candy bar at full price could purchase a second candy bar for $0.50. a third candy bar would cost $1.00, a fourth would cost $0.50, and so on. if, in a single transaction during the promotion, rajiv spent d dollars on n candy bars, where d and n are integers, is n even?
(1) d is prime.
(2) d is divisible by 3.