please help me with this assignment, calculate the EOQ based on the givens below using excel: A = annual demand = 20,000 Cp = Cost of an order which includes preparing and following up the order = $100.00 Ch = Unit inventory cost per year or item cost (P) $100 times annual carrying cost rate (r) (25%) Use an excel file to calculate the EOQ order, use the formula bar to create the EQO formula.