Which of the follov,ring forecasting methods puts the least weight on the most recent time series value? O O O O a . exponential smoothing

Which of the follov,ring forecasting methods puts the least weight on the most recent time series value?

O

O

O

O

a$.$ exponential smoothing with a $=\mathrm{.}2$

b$.$ exponential smoothing with a $=\mathrm{.}3$

c$.$ moving average using the most recent three periods

d$.$ moving average using the most recent four periods