Given the following data for work packages in a PERT/Cost network at week 18: Activity Immediate Budgeted Budgeted Percent Expense Predecessors Time Cost Completed To Date (weeks) (planned) A 12 $60,000 100% $55,000 BCDE 8 $20,000 100% $21,000 A 6 $60,000 75% $40,000 B, C 10 $40,000 50% $25,000 C, D 8 $45,000 0% 0 EL F B 12 $80,000 75% $50,000 Is the project currently, experiencing a cost overrun? O a. The project is currently, experiencing a cost underrun of $6000. O b. The project is currently, experiencing a cost overrun of $6000. O c. The project is currently, experiencing cost overrun. the value of work= 189000, the actual cost-195000 d. None of the choices