Which of the Following Statements Concerning Iron Is FALSE

Which of the following statements concerning iron is FALSE?

A) Iron in the soil is usually insoluble and thus unavailable to plants.
B) Iron ranks fourth in abundance among all elements on the surface of the Earth.
C) All plants use Strategy I for iron mobilization and uptake.
D) Phytosiderophores are iron-chelating compounds.
E) Iron in the soil is normally present in the oxidized (Fe³⁺) form.