Multiple-choice question, please solve quickly

Question 15 Not yet answered Marked out of 1 P Flag question Binar Company produces three types of products with different sizes as a following: Small Medium Large Total Units Sold 300 500 200 1,000 Selling Price 75 80 90 Variable Cost 30 35 50 Fixed Cost 88,000 The weighted average contribution margin is: 48 O 59 O $44 O 35 Question 14 Not yet answered Marked out of 1 P Flag question It is necessary to calculate equivalent units of production in a department because O a. the existence of begining and ending work in process that are partially completed. b. at times a department may use a job order cost system and then switch to a process cost system. O c. a physical count of units is impossible. O d. the physical units in the department are always 100% complete