How would I do this step by step?

Multiple Choice: 4. A company is screening ideas for new services. Five alternative service ideas are being considered. Management identified four criteria and weighted them as follows: A = 30, B = 10.C = 20, and D = 40. They have also come up with scored values for the five alternatives and the four criteria as shown following. Management has decided that if an alternative has less than a total scored value of 600, it should automatically be rejected. Use the preference matrix technique to determine which idea should be accepted. Alternatives Criterion 1 2 3 4 5 7 A B D 8 7 2 4 5 3 4 5 3 6 5 2 OMM 5 4 3 8 a. Service #1 or #2 b. Service #3 or #4 c. Service #5 d. None Answer: d (Class note: Chapter 2, Supplement A, of power point note, page #20-26)