計算機結構與作業系統(B)

(5 pts) Compilers could affect program execution efficiency. We have two compiler options, C1 and C2. Given a program A, compiler C1 results in a dynamic instruction count of $1.0 \times 10^9$ and has an execution time of 1.1 second, while compiler C2 results in a dynamic instruction count of $1.2 \times 10^9$ and an execution time of 1.5 second. Assume the processor has a clock cycle time of 1ns. What is the average CPI for that program compiled with C1 and C2, respectively?