If Auxin Failed to Lose a Proton (And So Never

If auxin failed to lose a proton (and so never became negatively charged) in a cell's cytoplasm, how would its failure to lose a proton affect auxin transport and the development of new xylem and phloem?

A) Auxin would remain sequestered in the cells where it was produced.
B) Auxin may move between cells (via diffusion) , but not in a directed manner.
C) New xylem and phloem would continue to form normally.
D) New xylem and phloem would be malformed or not form at all.