Use simple exponential smoothing with $\backslash$alpha $=0\mathrm{.}9$ to forecast donut sales for April. Assume that the forecast for January was for $28$ donuts.

Month Donut Sales

January $32$

February $33$

March $28$

April $39$

Group of answer choices

$28\mathrm{.}49$

$29\mathrm{.}93$

$30\mathrm{.}22$

$29\mathrm{.}17$