Question $22(15$ points$)$

Based on the network diagram below, calculate the earliest start and earliest finish, latest start and latest finish for Activity F$,$ and select the correct answer.

Question $22$ options:

a$)$

Earliest start $=43,$ earliest finish $=55,$ latest start $=43,$ latest finish $=55$

b$)$

Earliest start $=43,$ earliest finish $=55,$ latest start $=45,$ latest finish $=57$

c$)$

Earliest start $=45,$ earliest finish $=57,$ latest start $=45,$ latest finish $=57$

d$)$

Earliest start $=45,$ earliest finish $=55,$ latest start $=45,$ latest finish $=55$