. Calculate the additional shipping and transit inventory cost using the air and ground transportations. (Negative answers should be indicated by a minus sign. Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 2 decimal places.) 5 Zone (days to deliver) Additional in-transit inventory cost to ground ship (based on days in-transit)0.00 Total additional cost to air ship b. Considering all shipments combined, is the decision to switch to air shipping cost effective? O Yes No