Activity Normal Time $($days$)$ Crash Time $($days$)$ Normal Cost Total Cost with Crashing Immediate Predecessor$($s$)$

A $54$ $$800$ $$1,100-$

B $75$ $$300$ $$600-$

C $65$ $$600$ $$650-$

D $53$ $$750$ $$1,500$ A

E $52$ $$1,200$ $$1,650$ C