Which one of the following statements describes a property of RISC computer architecture?

a$.$

A small set of instructions do a minimum number of simple operations.

b$.$

RISC is easier than other designs because there is a single instruction for both simple and complex tasks.

c$.$

Micro$-$memory holds the set of operations for each complex instruction in the instruction set.

d$.$

The circuitry of the CPU in a RISC design is very complicated.