A weighted moving average forecasting model, using weights of 0.7 (applied to most recent period), 0.2 and 0.1 (applied to least recent of previous three periods) is being used to forecast demand. What will be the forecast for period four (F4)? (Don't round your result when determining your answer choice) Demand Day (t) (Dt) 1 251 2 253 3 248 4 243 5 245 6 252 7 248 O a. less than 244 O b. between 244 and 246 O c. between 246 and 248 O d. between 248 and 250 O e. more than 250