Suppose it is January 1980 and the​ $/DM exchange rate is​$. 35/DM and the​ DM/FF exchange rate is​ DM. 31/FF. What is the​FF/$ cross​ rate?
A. ​FF9. 217/$
B. ​FF3. 226/$
C. ​FF1. 129/$
D. ​FF. 886/$