Common processor architectures include RISC (Reduced Instruction Set), CISC (Complex Instruction Set), and EPIC (Explicitly Parallel Instruction Set). The most widely used X86 architecture belongs to which of the following architectures?

Common processor architectures include RISC (Reduced Instruction Set), CISC (Complex Instruction Set), and EPIC (Explicitly Parallel Instruction Set). The most widely used X86 architecture belongs to which of the following architectures?
A . EPIC
B . CISC
C . RISC
D . MIPS

Answer: B