Over a one year period, a bond's price drops from $$1010$ to $$1000$ and $$35$ in coupon payments are received. The annual return of the bond was:

a$)2\mathrm{.}5\%$

b$)4\mathrm{.}5\%$

c$)3\mathrm{.}5\%$

d$)-1\%$