What is the main function of a power electrical system?

A power electrical system is designed to minimize the duration of interruptions and the number of affected users in case of a component failure.
A power electrical system is designed to maximize the duration of interruptions and the number of affected users in case of a component failure.
A power electrical system is designed to ignore the duration of interruptions and the number of affected users in case of a component failure.
a) Only statement I is correct.
b) Only statement II is correct.
c) Statement I and II are correct.
d) Statement II and III are correct.