Use a three$-$day moving average to smooth the time series. Forecast the closing price for the next trading day using manual calculations and Excel.Please, find MSE using Excel.

Forecast for the next trading day is $80\mathrm{.}55$

MSE is $\mathrm{.}45$

Forecast for the next trading day is $80\mathrm{.}31$

MSE is $42$

Forecast for the next trading day is $80\mathrm{.}27$

MSE is $50$

non of these alternatives is correct