Answer:
The answer is D. 10%
Step-by-step explanation:
The coupon rate that must cause the bond to be issued at a premium must be greater than the Yield-to-maturity (YTM).
If it is issued at a coupon rate equals to the Yield-to-maturity (YTM), it is said to be issued at par.
And If it is issued at a coupon rate lower to the Yield-to-maturity (YTM), it is said to be at discounts