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In the network shown in Fig., the concurrent and preceding activities corresponding to activity 2-4 are respectively | |
A. | 1-2 and 4-7 [Wrong Answer] |
B. | 2-3 and 1-2 [Correct Answer] |
C. | 2-3 and 4-7 [Wrong Answer] |
D. | 1-2 and 3-6 [Wrong Answer] |