Talisman Energy Is an Oil Exploration and Production Company Headquartered

Talisman Energy is an oil exploration and production company headquartered in Calgary that trades on the New York Stock Exchange. At time of purchase by a Canadian investor the stock's price and the exchange rate were US$10 and US$0.64/C$1.00 respectively. One year later, the investor sold the shares for US$9.50 and the exchange rate was US$0.70/C$1.00.
-Calculate the exchange rate return from a Canadian perspective.(Round final percentage answer to 2 decimal places,and do not round intermediate calculations.)

A) -9.38
B) -8.57%
C) 8.57%
D) 9.38