During the period $1990$ to $2017,$ the average yield on $3$minusmonth U$.$S$.$ Treasury bi

was $2\mathrm{.}78\%,$ the average inflation rate was $2\mathrm{.}48\%,$ the average yield on $30$ minusyear

Treasury bonds was $5\mathrm{.}22\%,$ and the average return on $30$ minusyear Aaaminusrated

corporate bonds was $6\mathrm{.}08\%.$ The real riskminusfree shortminusterm interest rate is

Question content area bottom

Part $1$

A$.$

$2\mathrm{.}13\%$

B$.$

$0\mathrm{.}30\%.$

C$.$

$4\mathrm{.}76\%.$

D$.$

$2\mathrm{.}97\%$