According to the court decision in the case of Pedido de Uniformização nº 0000018-42.2014.8.26.09685, what is the understanding regarding brokerage...

According to the court decision in the case of Pedido de Uniformização nº 0000018-42.2014.8.26.09685, what is the understanding regarding brokerage fees and their relation to the sale of a property?

I - The commission is normally paid by the buyer of the property.
II - The brokerage fee can be passed on to the buyer of the property.
III - The brokerage fee is always paid by the seller of the property.
IV - The brokerage fee is considered a form of tied selling.
a) I and IV are correct.
b) II and III are correct.
c) II and IV are correct.
d) I and III are correct.