What Did Charles Darwin Propose After Observing the 11-Inch Long

Multiple Choice

What did Charles Darwin propose after observing the 11-inch long nectaries of the Angraecum sesquipedale orchid in Madagascar?

A) the presence of very small bees that can fit into a long nectar tube
B) the existence of a pollinator moth with a proboscis of 10-11 inches
C) that the orchid was an evolutionary dead end and could no longer reproduce
D) that the orchid must reproduce asexually