Consider the bonds below as they are priced today

Bond A Bond B

Par Value $$1,000$ $$1,000$

Number of years to maturity $911$

Coupon Rate $7\mathrm{.}00\%8\mathrm{.}00\%$

Price today $$1,165\mathrm{.}00$ $$1,165\mathrm{.}00$

YTM today $4\mathrm{.}71\%5\mathrm{.}92\%$

What is the highest YTM at which Bond B would be priced at a premium?