please explain. show work

3. Project Crashing A. Compute the per day costs for crashing each activity Normal Crashed Per Day Crashed Cost Activity DurationCost Duration |Cost ays $1,000 3 days $2,000 B 5 days$2,5003 days $5,000 2 days $1,200 D 7 days$3,5005 days $5,000 1 day $2,000 F 5 days $2,0004 days $3,000 G9 days$4,5007 days$6,300 A 4 C3 days$750 E2 days$500 3 days B. What is the most attractive candidate to crash: C. What is the second most attractive candidate to crash: D. What is the least attractive candidate to crash