2. (15 Points) Computer C360 is built with no pipelining in single cycle of 7 ns: IF 1 ns, ID 1.5 ns, EX 1 ns, MEM 2 ns, and WB 1.5 ns. Designers consider building C470 using a five stage pipeline based on C360 data. + a) What is the clock cycle time of the C470 5-stage pipeline? b) If there is a stall every four instructions, what is the CPI of C470?+ c) What is the speedup of C470 over C360 assuming Parts b?+