Consider the following table of activities that describes a project network and Answer the question $7$ & $8$ accordingly.

$\backslash$table$[[$Activity$,$Predecessors,$\backslash$table$[[$Normal$],[$duration$],[($days$)]],\backslash$table$[[$Crash$],[$duration$],[($days$)]],,$al cost$,,$ish cost$],[$A$,-,10,5,$S$,1,000,S,3,000],[$B$,$A$,20,10,$$$,4,000,S,6,000],[$C$,$A$,5,4,$$$,2,000,s,4,000],[$D$,$B$,$ C$,3,2,s,1,000,s,2,000],[$E$,$B$,$ C$,20,10,S,5,000,S,10,000],[$F$,$B$,$ C$,4,3,S,3,000,s,4,000],[$G$,D,E,F,10,5,5,2,000,s,5,000]]$

$(15$ points$)$ Which of the following activity$/$activities are Not critical?

a$.G$

b$.$ D

c$.$ A

d$.$ B

c$.F$

f$.E$

$(15$ points$)$ What is the crash cost per day of Activity G$?$

a$.200$

b$.300$

c$.600$

d$.3000$

e$.100$

f$.500$