Observation	Machine-hours
June	2,925
July	2,737
August	2,850
September	2,475
October	2,437
November	2,325
Predict what December machine hours will be using
A) 3-month moving average
B) Linear regression
c) Nave forecasting
D) 4-month weighted moving average with weights of 10%, 15%, 30%, 45% applied from the least recent to the most recent month.