A non-plpelined system takes 15ns to process an instruction with a clock cycle of 1.5ns. The same instruction can be processed in a 5 -segment pipeline. The instruction set architecture of the non-pipelined systern is replaced with a CISC design. Empirical tests show that for a typical program, 60% of the instructions take only 3ns to complete and 15% of the instructions take 7.5ns. Determine the average time taken to process 20 instructions with this system to one decimalplace. a. 98.2ns b. None of the other answers. c. 28.5ns d. 70.1ns e. 12.5ns