Best Studios Inc., a company in America, has sold a state-of-the-art camera to a Swiss company and given the Swiss customer the option to repay in three months by paying either $ 10,000 or SF15,000. Today, the current exchange rate is $ 0.60 / SF. Given this free choice to the customer, what is the exchange rate involved?

a. There is not enough information to answer the question

b. depends on the future exchange rate in 3 months

c. $ 0.60 / SF

d. $ 0.67 / SF

e. $ 0.62 / SF