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Mathematics (09) Practice Test31. Use the matrix definitions below to answer the questionthat follows.Q = ⎣⎡2 43 3⎤⎦R =⎣⎢ ⎡0 –2 –17 2 –16 5 5⎦ ⎥⎤S =⎣⎢ ⎡3 2–4 94 8⎦ ⎥⎤Based on the definitions above, which of the following matrixproducts is defined?A. QRB. QSC. SQD. SR32. Use the matrices below to answer the question that follows.A =breakfast lunch dinner costMon 10 3 10Tue 0 10 10 breakfast $ 5Wed 2 0 5 B = lunch $10Thu 6 5 10dinner $20Fri 4 8 12Matrix A represents the numbers of breakfasts, lunches, anddinners served on each of five consecutive days. Matrix Brepresents the cost of each breakfast, lunch, and dinner.Which of the following is represented by the product ofmatrix A and matrix B?A. the total costs of all meals combined for each dayB. the total costs for each type of meal on each dayC. the total costs for each type of meal for the entirefive daysD. the total cost of all meals combined for the entirefive days21