Treasury bills yielded a nominal average return over $95$ years of $3\mathrm{.}3\%$ versus an average

inflation rate of $2\mathrm{.}9\%$ over the same period. This makes the real return on Treasury bills

approximately equal to

$3\mathrm{.}5\%$

$6\mathrm{.}7\%$

$\mathrm{.}4\%$

$3\mathrm{.}0\%$