Assume large$-$company stocks returned $12\mathrm{.}1$ percent on average over the past $88$ years. The risk premium on these stocks was $8\mathrm{.}6$ percent and the inflation rate was $3\mathrm{.}0$ percent. What was the average nominal risk$-$free rate of return for those $88$ years?

A$)3\mathrm{.}5\%$

B$)9\mathrm{.}1\%$

C$)4\mathrm{.}6\%$

D$)\mathrm{.}5\%$

E$)6\mathrm{.}5\%$