Suppose a bond issued by the European Central Bank and denominated in euros pays $2\%$ per year. Today the exchange rate is $1\mathrm{.}35$ dollars per euro. It is expected that the exchange rate in one year will be $1\mathrm{.}49$ dollars per euro. What is the annual dollar return on this bond?

A$.2$ percent.

B$.12$ percent.

C$.-7$ paticent.

D$.16$ percent.