Answer:
D.
Step-by-step explanation:
An exotic currency pair is the pair of currencies of a major countries with those markets that are emerging or developing. Such currency pairs are seldomly used as it lacks market depth, added to it, it also contain the possibility of unfair treatment or partial treatment.
Some example of exotic currency pair includes EUR/TRY (Euro and Turkish Lira), AUD/CAD (Australian Dollar and Canadian Dollar), etc.
The example of Exotic currencies from the given options are MXN (Mexican Peso), ZAR (South African Rand), and HKD (Hong Kong Dollar).
Thus the correct option is D.