_ 13. Suppose there is free trade between Mexico and Brazil and transaction costs are zero. The currencies of the two countries are peso and real respectively. Suppose further that the peso/real exchange rate at which purchasing power parity (PPP) holds between the two countries was 0.136 in 2009. If the CPI in Brazil was 185 in 2009 with respect to base year 1994, and that in Mexico was 150 (also with respect to 1994), then calculate the PPP exchange rate for the base year. (Round up your answer to 3 decimal places.) a. 0.110 b. 0.168 c. 5.962 d. 2.573 c. 0.145