(10 points) What is the best way to multiply a chain of matrices with dimensions that are 10 x 5, 5 2, 2 20, 20 x 12, 12 4, and 4 x 60? Show your work (including two tables-one indicating the index k which gives the final multiply index for each subproblem, and the second table which indicates the optimal number of multiplications for each subproblem)