The publishing company is currently selling 8,000 copies of the textbook per edition but management feels that sales could be increased by 1,000 books if the selling price per book was reduced by $1.00 per copy. Implementing such a policy should result in: Answer a) an increase in total contribution margin of $5,150. b) a decrease in total contribution margin of $4,150. c) a decrease in total contribution margin of $3,850. d) an increase in total contribution margin of $4,850