Consider the following project:

Activity Time Predecessor

A $12-$

B $10-$

C $9$ A

D $15$ A

E $7$ B

F $8$ D$,$ E

G $13$ C$,$ F

What is the early start time for the activity F$?$

Project Management.xlsxDownload Project Management.xlsx

Group of answer choices

$27$

$35$

$17$

$21$