Consider the following table of activities. Assume all activities require one unit of the same resource and only one resource is available at any time.

Activity Predecessors Normal Duration

A $5$

B A $10$

C A $7$

D A $5$

E B$,$ C$,$ D $6$

F D $5$

G E$,$F $6$

What is the initial length of the project? $($enter a number only$)$

Which activity $($activities$)$ should be started first after A$?($enter letters only $-$ no spaces or punctuation$)$

Which activity $($activities$)$ should be be started next? $($enter letters only $-$ no spaces or punctuation$)$