Which of the following is true of mycorrhizae?

• A. Arbuscular mycorrhizae penetrate the cytoplasm of root cells.
• B. Ectomycorrhizae are found in many crop plants, such as wheat and maize.
• C. The fungal hyphae of ectomycorrhizae form arbuscules.
• D. None of the listed responses is correct.
• E. Arbuscular mycorrhizae do not have a dense mantle ensheathing roots.