You have a bond that pays $ 60 per year in coupon payments. Which of the following would result in an increase in the price of your bond?
a. the price of a share of stock in the company falls
b. the likelihood that the firm issuing your bond will default on debt increases
c. coupon payments on newly-issued bonds fall to $ 50 per year
d. coupon payments on newly-issued bonds rise to $80 per year.