The following information is given for a CPM network:

Normal Normal Crash Crash

Activity Predecessor Successor Time Cost Time Cost

A $---$ B$,$ C $5$ $$602$ $$125$

B A D$,$ C $470290$

C A$,$ B D $6803150$

D B$,$ C $---340160$

What is the normal project completion time, given the information above?

$11$

$13$

$14$

$16$

None of the above.