Cost analysis. A company with two different plants manufactures guitars and banjos. Its production costs for each instrument are given in the following matrices. Plant X Plant Y Guitar Banjo Guitar Banjo Materials $35 $40 $72 $44 = A = B Labor $102 $113 $90 $126 Find = (A + B), the average cost of production for the two plants. 7 (A + B) = (Type integers or decimals.)Find (3)BA + (4)AC, if possible. 0 03 1 - 3 2 -10 A = B = C = -1 -1 1 0 -1 -1 1 0 -3 -1 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. (3)BA + (4)AC = (Simplify your answer.) O B. The matrix is not defined.Find a, b, c, and d so that: a 3 - 6 5 10 d -10 -7 -10 -7 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. a O A. d O B. There is no solution.- 3 1 - 3 Find a, b, c, and d so that 3 - 1 11 - 1 Select the correct choice below and fill in the answer boxes within your choice. O A. a O B. There is no solution