Activity Immediate Predecessors Expected time

A $-5$

C A $8$

D C $2$

B A $7$

E $-3$

F E $6$

I B$,$D $10$

M F$,$I $8$

G $-1$

H G $2$

K H $17$

end K$,$M

Given the activites above for a business project, the critical path is$?$