3 (Marks: 20) Company ABC specialises in crude oil refining. Your manager tasked you to develop a six-month sales forecast for the barrels, based on previous year's production numbers below. You are required to calculate: Previous year base (Barrels) Growth Base projection (Barrels) Promotion (Barrels) Sales forecast (Barrels) Your manager anticipates to factor in the 7% estimated in growth rate. In addition, your company thinks the promotion will this year result in a sales increase of 30 barrels in April and 30 barrels in June. Sales forecasting Previous year (Barrels) Promotion sales (Barrels) Jan. Feb. March April May June 223 250 284 371 469 501 25 25