Michelle rents a movie for a flat fee of $1.50 plus an additional $1.25 for each night she keeps the movie. Choose the cost function that represents this scenario if x equals the number of nights Michelle has the movie. A.c(x) = 1.50 + 1.25x B.c(x) = 1.50x + 1.25C. c(x) = 2.75 D.c(x) = (1.50 + 1.25)x