Consider a product that has a relatively stable demand. If that is the case, which of the following forecasting methods will likely be the most responsive to steady demand?

Simple exponential smoothing with an a $=0\mathrm{.}1$

Forecast Including Trend model $($the FiT model, with a small alpha$).$

Linear Trend Model

$15$

Simple exponential smoothing with an a $=0\mathrm{.}9$