Use the below info to answer the questions. The time units are weeks. If the CT is equal to the NT$,$ the activity cannot be crashed.

ACTIVITY IMMEDIATE PREDECESSOR$($S$)$ NORMAL TIME $($NT$)$ CRASH TIME $($CT$)$ NORMAL COST $($NC$)$ CRASH COST $($CC$)$

A $85$ $$8$ $$32$

B A $41$ $$2$ $$5$

C A $75$ $$5$ $$15$

D A $86$ $$5$ $$9$

E B$,$ C$,$ D $33$ $$10$ $$10$