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Question
The following statements relate to project network. Choose the correct code for the statements being correct or incorrect.
Statement I: An activity cannot be represented by more than one arrow, but an arrow can represent one or more activities.
Statement II: The activities in a critical path can be preponed or postponed.
नीचे दिए गए कथन प्रोजेक्ट नेटवर्क से संबंधित हैं। कथनों के सही या गलत होने के आधार पर सही कोड चुनें।
कथन I: किसी गतिविधि को एक से अधिक तीर (arrow) द्वारा नहीं दर्शाया जा सकता है, लेकिन एक तीर एक या अधिक गतिविधियों को दर्शा सकता है।
कथन II: क्रिटिकल पाथ (critical path) में शामिल गतिविधियों को पहले या बाद में किया जा सकता है।
A.
Both the statements I and II are correct.
B.
Both the statements I and II are incorrect.
C.
Statement II is correct, but I is incorrect.
D.
Statement I is correct, but II is incorrect
Answer ( Option B)

Both the statements I and II are incorrect.

Solution

Why Statement I is Incorrect
An activity in a network diagram is represented by one and only one arrow.
An arrow cannot represent multiple activities; each arrow defines a single, distinct task or dependency. 
Why Statement II is Incorrect
Critical path activities have zero total float or cushion time.
Preponing or postponing critical path tasks will directly alter and delay the overall project completion date.

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