Which criterion should the method meet?

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?

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.



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