a) Van- Neumann Architecture with CISC Instruction Set
b) Harvard Architecture with CISC Instruction Set
c) Van- Neumann Architecture with RISC Instruction Set
d) Harvard Architecture with RISC Instruction Set

Answer: b
Explanation: Harvard architecture has different memory spaces for both program memory and data memory with Complex Instruction Set Computer(CISC). The difference between CISC and RISC is RISC has few instructions than CISC. Where as in Van- Neumann, program and data memory are same. Van- Neumann is also called as Princeton architecture.