You are developing a custom-collection class.

You are developing a custom-collection class.
You need to create a method in your class. You need to ensure that the method you create in
your class returns a type that is compatible with the Foreach statement. Which criterion should
the method meet?

A. The method must return a type of either IEnumerator or IEnumerable.
B. The method must return a type of IComparable.
C. The method must explicitly contain a collection.
D. The method must be the only iterator in the class.

Answer: A