Scarlet Gilia, a Common Rocky Mountain Wildflower, Produces Red Flowers

Scarlet gilia, a common Rocky Mountain wildflower, produces red flowers early in the season and transitions to producing white flowers late in the season.Pollination by hummingbirds is replaced by pollination by moths.This adaptation would most likely benefit the pollination interaction because it would

A) prevent competition between hummingbirds and moths.
B) increase competition between hummingbirds and moths.
C) ensure that both hummingbirds and moths obtain food from the scarlet gilia.
D) ensure that the plant undergoes both self-pollination and cross-pollination.
E) lengthen the pollination season, making successful pollination more likely.