(a) Use tables similar to the ones below to trace the execution of the MATRIX-CHAIN-ORDER algorithm for a matrix-chain whose dimensions is given by p= (2, 3, 7, 5, 6, 4, 3). Table m Table s 2 3 756 4 3 ? A1 A1 A; TAT As ? A6? P1 P2 P3 P4 P5 P6 P7 In addition to summarizing your results in the above tables, you MUST also show details of how you computed the values of m[i, j] and s[i, j]. (b) Write the output of the procedure, PRINT-OPTIMAL-PARENS, based on your table s in (a)