Question 20 Not yet answered Marked out of 2.00 P Flag question Consider two different implementations, code sequence (1 and 2). There are three classes of instructions (A, B, and C) in the instruction set. The processor clock rate is 4GHz. The instruction counts are in billions. CPI for each instruction class B CPI 1 2 3 Code sequence 1 2 Instruction counts for each instruction class A B 2 1 2 4 1 1 Calculate the execution time of code sequence 2 in seconds. (The answer is numerical value without unit)