How can a bond have a negative rate of return?

A) if the current yield is greater than the coupon rate

B) if the current yield is less than the coupon rate

C) if the rate of capital loss exceeds the current yield D) if the rate of capital gains is less than the current yield

What is the rate of return on a bond with a coupon of $55 that was purchased for $900 and sold one year later for $950?

A) 5.56% B) 6.11%

C) 11.67% D) 12.43%