An IT hardware store provides a Web front$-$end allowing its customers to purchase IT equipment online $($e$.$g$.$ tablets, laptops, accessories, printers$).$ In the context of the order$-$to$-$cash process of this company, which of the following is likely to be modeled as a data store?Group of answer choicesAn invoiceThe shopping cart of a customer purchasing via the Web front$-$endThe Customer Relationship Management $($CRM$)$ systemThe history of a customer's past purchases