A computer engineering student found that the time required to get a data item from the memory inside the processor is 1 nano-second but the time required to get a data item from the main memory (i.e., RAM) is 1 microsecond (i.e., 1000 nano-seconds). If 99% of the time, the data needed by the processor can be found from the fast memory and 1% of the time the data needs to be read from the slower memory, what is the average memory access time? Select one: a. [0.99 + 0.01 x 1000] = 10.99 nano-seconds b. [0.99 x 1000 + 0.01] = 990.01 nano-seconds c. [1000+1] x 0.99 = 990.99 nano-seconds d. None of the above