You are developing an application that includes a class named Order. The application will store a
collection of Order objects.
The collection must meet the following requirements:
Use strongly typed members.
Process Order objects in first-in-first-out order.
Store values for each Order object.
Use zero-based indices.
You need to use a collection type that meets the requirements.
Which collection type should you use?

A.
Queue<T>
B.
SortedList
C.
LinkedList<T>
D.
HashTable
E.
Array<T>
Explanation:
Queues are useful for storing messages in the order they were received for sequential processing.
Objects stored in a Queue<T> are inserted at one end and removed from the other.
http://msdn.microsoft.com/en-us/library/7977ey2c.aspx
everybody here say the correct answe is A… but what about this condition:
Use zero-based indices?
0
0
Index of Queue starts at zero.
1
0