Which is correct?

Group of answer choices

a) Once an ordinary bond is issued, its coupon is fixed; the bonds yield fluctuates based on market conditions and investor preferences

b) Once an ordinary bond is issued, its yield is fixed; the bonds coupon fluctuates based on market conditions and investor preferences

c) Both an ordinary bonds coupon and yield are fixed when the bond is issued and no longer fluctuate

d) After an ordinary bond is issued, both its coupon and yield fluctuate based on market conditions and investor preferences