Which Statement About Mycorrhizae Is Least Correct

Which statement about mycorrhizae is least correct?

A) The fungus increases the surface area available for mineral and water uptake.
B) About half of plants lack mycorrhizae.
C) The fungus breaks down organic matter in soil,releasing nutrients that the plant can use.
D) The plant root furnishes the fungus with sugars and amino acids.
E) The mycorrhizal relationship is mutualistic.