The purchasing power parity theory "predicts" that if the price of semiconductors in the United States is $3 and the price in Japan is 210 yen for a comparable semiconductor, the exchange rate would be (assume only 1 good is traded, there is no government intervention, and transportation costs are negligible)
A) 180 yen/$.
B) 140 yen/$.
C) 70 yen/$.
D) $/yen 1.45.