Given: Assume that a SPEC benchmark is composed of four programs. For each program, the execution time when benchmark is running on ARM processor and when running on reference machine used by SPEC are given as follows: Name Execution Time Ref. Time SPEC ratio perl 1345 19120 bzip2 637 9777 817 9650 mcf 1200 10200 Question: What is the geometric mean (GM) of SPEC ratios for this machine (select the best answer). a) 22.7 b) 45 c) 11.25 d) 10.11 el 9.40 f) 12.9