Considering the contract signed between Caio and Rodrigo, which includes a quota litis clause, what is the correct statement? A) The adoption of t...

Considering the contract signed between Caio and Rodrigo, which includes a quota litis clause, what is the correct statement?

A) The adoption of the quota litis clause is prohibited by the Brazilian Bar Association's Code of Ethics and Discipline, so the case must be governed by the discipline related to contracts that are silent on the amounts due as contractual fees.
B) The adoption of the mentioned clause is allowed, but it is forbidden for the contracted fees, plus the fees of the losing party, to be higher than the advantages obtained by Caio; furthermore, it is not allowed for the attorney's fees to be charged on the value of future installments.
C) The inclusion of the clause in question is authorized, in which case the contractual fees must be limited to the advantages obtained by Caio, excluding from such limitation the fees of the losing party; furthermore, it is not allowed for the attorney's fees to be charged on the value of future installments.
D) The quota litis clause included in the contract is permitted, but it is forbidden for the contracted fees, plus the fees of the losing party, to be higher than the advantages obtained by Caio; furthermore, it is allowed for the attorney's fees to be charged on the value of future installments, if established with moderation and reasonableness.