Choice "B" is correct. Demand is elastic if a decline in price (P) results in an increase in total revenue (TR); or if an increase in P results in a decline in TR. On the other hand, if demand is inelastic, a decline in P will result in a decline in TR or an increase in P will result in an increase in TR.First, the total revenues at both the new and the previous rate must be computed. The (new or previous) rate times average games played (AGP). As a result, TR at the previous rate (PR) is 800 for regular weekday (RW), 900 for senior citizen (SC), and 3,315 for the weekend (WE). TR at the new rate (NR) is 770 for RW, 656 for SC, and 4,460 for WE.So, demand for RW and SC is elastic because the increase in P results in a decline in total revenue. The demand for WE is inelastic because the increase in P results in an increase in TR.Note: If TR remains constant after a change in P, the demand is unit elastic. Choices "a", "c", and "d" are incorrect, per the above explantion.