Consider the following yield curve:

Calculate the $1$ year deferred $3$ year forward rate $f_{(1,4)}.$

$($A$)5\mathrm{.}8\%$

$($B$)6\mathrm{.}9\%$

$($C$)7\mathrm{.}6\%$

$($D$)8\mathrm{.}8\%$

$($E$)9\mathrm{.}0\%$