Cost ( Pesos) Activity Normal Crash A 1,000 1,600 B 2,000 2,700 300 300 1,300 1,600 850 1,000 4,000 5,000 G 1,500 2,000 What is the project completion date ? O A) 12 O B) 10 O c) 8 OD) 15 O E) 9