Suppose someone forecasted demand using Holt's method. The model was tested with various combinations of alpha $($smoothing constant for series$)$ and beta $($smoothing constant for trend$).$ Given the following results for the MAD $($mean average deviation$),$ MSE $($mean squared deviation$),$ and BIAS, which model should be selected for forecasting future demand?

a$.$ alpha $=0\mathrm{.}3,$ beta $=0\mathrm{.}6$

b$.$ alpha $=0\mathrm{.}3,$ beta $=0\mathrm{.}2$

c$.$ alpha $=0\mathrm{.}2,$ beta $=0\mathrm{.}1$

d$.$ alpha $=0\mathrm{.}1,$ beta $=0\mathrm{.}1$