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:
Internally store a key and a value for each collection item.
Provide objects to iterators in ascending order based on the key.
Ensure that item are accessible by zero-based index or by key.
You need to use a collection type that meets the requirements. Which collection type should you use?
A. LinkedList
B. Queue
C. Array
D. HashTable
E. SortedList