2 Part of an activity network is shown in the diagram below.
\(A B C\) is part of the critical path of the activity network.
\includegraphics[max width=\textwidth, alt={}, center]{dcf97b92-d067-41d4-89a6-ea5bab9ea4ff-04_264_908_447_566} The duration of activity \(B\) is \(d\).
Which of the following statements about \(d\) is correct? Circle your answer. $$0 < d < 10 \quad d = 10 \quad 10 < d < 20 \quad d = 20$$