Develop a trend line for the demand for$$ fertilizer, forecast the demand for year $12.$

Year

Demand$($Bags$)$

$1$

$4$

$2$

$6$

$3$

$4$

$4$

$5$

$5$

$10$

$6$

$8$

$7$

$7$

$8$

$8$

$9$

$12$

$10$

$14$

$11$

$15$

A$.$

$11\mathrm{.}79$

B$.$

$13\mathrm{.}67$

C$.$

$14\mathrm{.}00$

D$.$

$14\mathrm{.}87$