Which of the following statements regarding arbuscular and ectomycorrhizal fungi are correct:
- Ectomycorrhizal fungi do not penetrate the root cells, whereas arbuscular fungi penetrate the root cells of host plants.
- Ectomycorrhizal fungi are involved in phytoremediation, whereas arbuscular fungi are not involved in phytoremediation.
- Ectomycorrhizal fungi are extracellular while arbuscular are intracellular.
Select the correct option using the codes given below: