Given the following data, what is MAD$/$MAE for the exponential smoothing forecast with $=2?$ Use a naive forecast as your starting point.

$\backslash$table$[[$Month$,$Demand$],[1,19],[2,20],[3,18],[4,19],[5,17]]$

$1\mathrm{.}0$

$1\mathrm{.}5$

$842$

$1\mathrm{.}05$