Sheffield Corp. manufactures a product with a standard direct labor cost of two hours at $18 per hour. During July, 1800 units were produced using 3800 hours at $18.30 per hour. The labor price variance was

Which of the following is the best example of substitution? a. movie producers begin making more comedies because they cost less to make than action films. b. people walk out before the end of a movie because the acting and the plot are terrible. c. people at the movie theater switch from popcorn to candy because popcorn has gotten too expensive. d. more people begin going to matinee movies instead of night movies to save money on the tickets.