$27.$ What is the holding period yield for an investor who pays $$1,145$ for a bond with a $$1,000$ face value and a $5\%$ coupon and sells the bond three years later for $$1,250?$

a$.5\mathrm{.}00\%$

b$.8\mathrm{.}93\%$

c$.7\mathrm{.}21\%$

d$.3\mathrm{.}78\%$