What are the different types of bars used in agricultural spraying? I - The portaboquillas bars are constructed in different ways according to the...

What are the different types of bars used in agricultural spraying?

I - The portaboquillas bars are constructed in different ways according to the crops to which the treatment is applied.
II - The spraying bars for low crops are of variable length, from 2 to 36 meters, and are placed horizontally or parallel to the ground.
III - The spraying bars for vineyards and medium-sized plants are made up of a horizontal part placed at a sufficient height to surpass the crop and with vertical elements for holding the nozzles.
IV - The spraying bars for fruit trees are curved to better adapt to the shape of the trees and direct the spray to reach most of the crown volume.
V - The pistols and lances are particularly interesting in treatments where it is necessary to precisely direct the phytosanitary product and where its distribution inside the foliage mass is difficult with other application systems.
a) I, II, III, IV and V are correct.
b) Only I, II, III and IV are correct.
c) Only II, III, IV and V are correct.
d) Only I, III, IV and V are correct.