One of the key decision making factors in a very competitive opportunity will be cost.  Companycom needs an aggregate rPerf rating of 120. What is the best solution?（）

A、Two p5 570 16 way 1.9 MHz machines

B、One p5 590 32 way 1.65 MHz machines

C、One p5 595 32 way 1.65 MHz machines

D、Two p5 570 16 way 1.65 MHz machine