In Natural Monopoly,AC Continuously Declines Due to Economies in Distribution

Multiple Choice

In natural monopoly,AC continuously declines due to economies in distribution or in production,which tends to found in industries which face increasing returns to scale.If price were set equal to marginal cost,then:

A) price would equal average cost.
B) price would exceed average cost.
C) price would be below average cost.
D) price would be at the profit maximizing level for natural monopoly
E) all of the above