Why are mycorrhizal fungi superior to plants at acquiring mineral nutrition from the soil?

A)Hyphae are one hundred to one thousand times larger than plant roots.
B)Hyphae have a smaller surface-area-to-volume ratio than do the hairs on a plant root.
C)Mycelia are able to grow in the direction of food.
D)Fungi secrete extracellular enzymes that can break down large molecules.