a$)$ A common method for classification of different computer system ISA is by their

architectural complexity. A Complex Instruction Set Computer $($or CISC$)$ has many

specialized instructions, some of which may only be rarely used in practical programs.

However, it enables more performance efficient implementation of even the rarely used

instructions. On the other hand, a Reduced Instruction Set Computer $($or RISC$)$

simplifies the computer's control and processing unit by efficiently implementing only

the instructions that are frequently used in programs. The less common operations are

implemented as programmatic subroutines, which may not be written$/$programmed$/$coded

in an efficient manner from performance perspective.

Given this method of ISA classification, how would you classify the ISA of an LC$-3$

computer? Does it resemble a CISC ISA or a RISC ISA? Provide sufficient justification

for your answer.