Which Characteristics Do Ectomycorrhizae and Arbuscular Mycorrhizae Have in Common

Which characteristics do ectomycorrhizae and arbuscular mycorrhizae have in common?

A) Their hyphae penetrate the wall of the plant host cell.
B) They form treelike hyphal structures inside the plant host cell.
C) They improve phosphorus uptake by the host plant.
D) They form a dense web of hyphae around the outside of the plant root.
E) They can also form on the leaves of the host plant to improve nitrogen uptake.