Assuming the Theory of Purchasing Power Parity Holds,what Is the Exchange

Assuming the theory of purchasing power parity holds,what is the exchange rate between the United States and Mexico if the price of an avocado is $1.50 in the United States and 15.5 pesos in Mexico?

A) 0.10 pesos per dollar
B) 1.33 pesos per dollar
C) 10.33 pesos per dollar
D) 23.50 pesos per dollar
E) 3.14 pesos per dollar