Simulate the execution: List the values in PC, AC, and IR in both fetch and execute cycles for each instruction.

a) The values in PC, AC, and IR depend on the specific instruction.
b) The values in PC, AC, and IR remain constant throughout the fetch and execute cycles.
c) The values in PC, AC, and IR are determined dynamically during each fetch and execute cycle.
d) The values in PC, AC, and IR are irrelevant to the execution of instructions.