Question: Which scenario would indicate a queue is empty when implemented with a linked structure? a . The 'front' pointer is 'NULL'. b . The 'rear

Which scenario would indicate a queue is empty when implemented with a linked structure?
a. The 'front' pointer is 'NULL'.
b. The 'rear pointers are 'NULL'.
d. The 'top' pointer is 'NULL'.
Which scenario would indicate a queue is empty

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