3. Write the most code-size-efficient (in terms of number of instructions) assembly code, assuming load and store instructions are available, for the following C code: C = (a + b) * a; d = (a + b) * b; e = (a + b) * (c + d); for each of the following machine architecture a. Stack-based architecture b. Accumulator-based architecture C. (1,2)-GPR architecture d. (3,3)-GPR architecture