So I have a questions relating to Java restricted data structures:

1- Three nodes (a, b and c) are inserted into a restricted structure in the order: Push (a), Push (b) Push(c). A node is fetched/deleted. What is returned if the structure is:

a) A Stack ___________________, b) A Queue ____________________

So basicly I need to know what in speficic is returned from a stack or a queue. Any help is appreacated.