Q$8\mathrm{.}4$ Four basic types of AI agents that embody the principles underlying almost all intelligent systems are $(1$ point$)$:

a$)$ software agents, hardware agents, utility$-$based agents and simple reflex agents b$)$ software agents, model$-$based reflex agents, utility$-$based agents and simple reflex agents c$)$ software agents, hardware agents, goal based agents and simple reflex agents d$)$ model$-$based reflex agents,, hardware agents, utility$-$based agents and simple reflex agents e$)$ model$-$based reflex agents,, goal based agents, utility$-$based agents and simple reflex agents