What are the benefits of using composition over inheritance when we need to add behavior to List <>?

Question

What are the advantages / disadvantages of option 2 compared to 1 in this example?

Option 1 (Inheritance):

public class SalesList : List<Sales>
{
    //methods that add extra behavior List<Sales>
}

Option 2 (composition):

public class SalesList 
{
    private List<Sales> _list;
    //methods that add extra behavior to List<Sales>
}

Answer 1

Option 1
 - Advantages - all the benefits of inheritance and reuse
 - Disadvantages - the code now signals to consumers that it is hidden from the List. If this needs to be changed later, all affected consumers will be affected.

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Answer 2

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Answer 3

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Answer 4

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