Option A: RISC only supports Register to register ALU operations, So as compared to CISC it has less Instruction set.(TRUE)
Option B: Because of limitation of using only Registers in ALU operations it has less Addressing Modes.(TRUE)
Option C: Because It has less Instruction Set to make circuits it takes less space, So more space for Registers as compared to CISC. (TRUE)
Option D: Less Instruction Set leads it easy to implement hardwired as compared to CISC.(TRUE)