Which of the following statements about residential sprinkler systems is MOST accurate?

A. Residential sprinkler systems are generally more costly than commercial systems.
B. Residential sprinkler systems operate more slowly and at higher temperatures than do commercial systems.
C. Residential sprinkler systems are expected to prevent flashover, and improve the chance for occupants to escape.
D. Residential sprinkler systems must be connected to a water source separate from the domestic water service.

C