What Is the Advantage to a Plant Like an Orchid

What is the advantage to a plant like an orchid producing nectar over a plant like a pine tree that does not produce nectar?

A) Nectar helps disperse pollen by wind
B) Nectar attracts animals that perform pollination
C) Nectar provides food for the pollen and growing fruit
D) Nectar helps disperse pollen by water
E) Nectar provides a sticky surface for pollen to attach to, promoting fertilization