HELP 20 Points!!

Ella and Kate played basketball last year. Ella scored 16 points per game. Kate's total points for the season were 22 less than Ella's. The following expression shows Kate's total points:
16z − 22 In the expression, what does variable z represent?

Select one:

a. Ella's total points for the season.

b. Kate's total points for the season.

c. The number of games that Ella played. (the one I think)

d. Kate's points per game.