5. (8%) Suppose that a program consists of n instructions in sequential order. A machine cycle consists of three phases, namely, phase 1, phase 2, and phase 3. All phases require the same amount of time, T, to complete. (a) (4%) Calculate the total amount of time to complete the execution of the program using a CPU with no pipelining. (b) (4%) Calculate the total amount of time to complete the execution of the program using a CPU with pipelining