You have the following time and cost information for use in a time$-$cost CPM scheduling model.

Activity Normal Time Crash Time Normal Cost Crash Cost

A $32$ $ $400$ $ $600$

B $53$ $ $600$ $ $1200$

C $41$ $ $300$ $ $1500$

What are the three costs per unit of time to expedite each activity?

Multiple Choice

A $=$ $$300,$ B $=$ $$200,$ C $=$ $$300$

A $=$ $$100,$ B $=$ $$200,$ C $=$ $$400$

A $=$ $$200,$ B $=$ $$200,$ C $=$ $$200$

A $=$ $$100,$ B $=$ $$400,$ C $=$ $$300$

A $=$ $$200,$ B $=$ $$300,$ C $=$ $$400$