6. [10 points] [Based on Problem 2.25 from the textbook] Convert the following C code to RISC-V assembly language. Use as few instructions as possible. Assume that the values of a, b, i, and j are kept in registers x12, x13, x6, and x7, respectively, and that the base addresses of Y and Z are in register x14 and x15, respectively. Only registers x12-x15 are initialized at the start of your code; you need to initialize any other registers as needed. The return value (sum) must be in register x10 at the end of your code. Assume that all values are 32-bit signed integers. sum = 0; for (i -0; i