In a Typical Approach to Identifying Essential Elements in Plants

In a typical approach to identifying essential elements in plants, a plant growing hydroponically in a solution containing all known nutrients is transplanted to a solution _______.This approach is most effective at detecting nutrients needed in _______ amounts.

A) lacking a single potential nutrient; small
B) lacking a single potential nutrient; large
C) lacking all known nutrients; small
D) lacking all known nutrients; large
E) having a single potential nutrient; small