A project has 4 remaining activities and 13 days left and a penalty of $ 8 , 000 per day of delay. Activity B and

A project has $4$ remaining activities and $\mathrm{13}$ days left and a penalty of $$8,\mathrm{000}$ per day of delay. Activity B and C can begin as soon as activity A is completed. Activity D can begin as soon as both B and C are completed.