An event is indicated on the network by A. A straight line B. A number enclosed in a circle or a square C. A straight line with circles at the ends D. A dotted line E. An arro
An event is indicated on the network by A. A straight line B. A number enclosed in a circle or a square C. A straight line with circles at the ends D. A dotted line E. An arro
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B.A number enclosed in a circle or a square