Which of these forecasting techniques will yield forecasts that are identical to a naive forecast?

A$.$ weighted moving average with $D_t=0\mathrm{.}5$ and $D_{t-1}=0\mathrm{.}5$

B$.$ a simple moving average of two periods

C$.$ exponential smoothing with alpha $=1$

D$.$ a trend line with beta $=1\mathrm{.}0$