RS Corporation, a manufacturer of ethnic foods, contracted in 2023 to purchase 600 pounds of a spice mixture at $3.00 per pound, delivery to be made in spring of 2024. By 12/31/23, the price per pound of the spice mixture had risen to $3.25 per pound. In 2023, RS should recognize Select one: a. a loss of $150. b. a loss of $1,800. c. a gain of $150. d. no gain or loss.