Using the following quarterly demand data, what would be the forecast for quarter I of Year$-4?($Select the best answer.$)$

$\backslash$table$[[$Period$,1,2,3,4,5,6,7,8,9,10,11,12],[$Quarter$,Y_{r-1}$

I,$Y_{r-1},Y_{r-1}$

III $,Y_{r-1}$

$IV,Y_r-2$

$1,Y_{r-2}$

$II,Y_{r-2},Y{r}_r-2$

$IV,$Yr$-3,\{\begin{array}{cc}\text{:}& Yr-3\end{array},Y_r-3$

III $,\backslash$table$[[Y_r-3$