The chief architect in charge of designing your company’s new processor has drafted an isa that includes many operations: add, subtract, xor, xnor, and, nand, or, nor, and not. the total number of opcodes (including operations, data movement, and control flow) is 19. the chief architect suggests having 15 registers in the register file. instructions that require three register operands then need ceiling [log2 (19 × 15 × 15 × 15)] = 16 bits. in a few sentences, explain to the chief architect why eliminating a few of the opcodes and allowing 16 registers is a better choice in terms of the microarchitecture. for credit, your response must also allow for 16-bit instructions. be specific about which opcodes should be eliminated.