Which of the following is a fungicide with apoplastic movement?

Answer: Option A

Carboxin is a fungicide with apoplastic movement.
Carboxin was inhibitory to succinic dehydrogenase assayed with phenazine methosulphate plus DCIP when intact mitochondria were used as the enzyme source but not when the solubilized enzyme was used.
The main site of action of carboxin, therefore, appears to lie between succinate and coenzyme Q.
When water moves from cell to cell through the intercellular spaces or walls of the cells and hence on the outer side of the plasma membrane, is termed apoplastic movement.