You have the following spot bid and ask rates between the Peruvian sol (PEN), the Russian ruble (RUB), and the Brazilian real (BRL): Bid BRL 0.0549/RUB BRL 0.9435/PEN RUB 18.577/PEN Ask BRL 0.0555/RUB BRL 0.9529/PEN RUB 18.763/PEN Which of the following is the closest to the arbitrage profit that is possible at these rates? O a. 7.03% O b. 6.03% O c. 9.40% O d. 6.57% O e. There is no arbitrage possible at these rates