You have collected the following data for a time-cost CPM scheduling model analysis. The time (in days) and the project direct costs are given in the table. The indirect costs for the project are determined on a daily duration basis. If the project lasts 16 days, the total indirect costs are $400;15 days, they will be $250;14 days, they will be $200 and 13 days, they will be $100. On what day do we achieve the lowest Total Project Cost 13 days 12 days 14 days 15 days 16 days