$18.$ Three different forecasting models have produced the following forecast errors:

Period

Model $1$ Forecast Error

Model $2$ Forecast Error

Model $3$ Forecast Error

January

$110$

$150$

$-100$

February

$-115$

$105$

$125$

March

$-120$

$-125$

$160$

April

$115$

$-130$

$-80$

May

$125$

$-90$

$110$

Using MAD, which forecasting model should be chosen?

a$)$ Model $1$

b$)$ Model $2$

c$)$ Model $3$

d$)$ impossible to tell without the demand data