Answer: CFA francs
Step-by-step explanation:
The CFA francs is generally used by the people of the central Africa to paying for the goods. The CFA franc is one of the name of the African currency that is mostly used in the west and central Africa.
In the central Africa, this currency is used in the six countries and it is guarantee by the given CFA French treasury. The currency code in the central Africa is given by the ISO and it is given as XAF.
Therefore, CFA francs is the correct option.