i have exam i need help quickly please

Consider a computer system with 2 levels of caches L1 and L2. L1 Cache has l-Cache and a D-Cache. The I cache has a miss rate of 16.8% and the D-Cache has a miss rate of 11.69. The miss penalty to L2 cache is 28 cycles. L2 cache miss rate is 75.9% and the miss penalty to the main memory is 161 cycles. The frequency of all data operations is 34.9%. Assuming a processor with no memory stalis has a CPI of 1. What is the CPI with memory stalls? Select one: O a. 32.31 Ob. 41.54 O c. 43.66 O d. 27.37 Oe. 4949742.01 Of. None of the options