A Machine Provides Four Sequential Steps in Processing a Transaction

Multiple Choice

A machine provides four sequential steps in processing a transaction. Over the last quarter, the reliability of each of these steps was 0.92, 0.98, 0.95, and 0.90. The total system reliability is:

A) less than 0.60.
B) equal to or greater than 0.60 but less than 0.70.
C) equal to or greater than 0.70 but less than 0.80.
D) equal to or greater than 0.80 but less than 0.90.