Which digital seller would be considered a digital mall?

a$.$ Pinterest$-$a social media web and mobile application company that sometimes features retail ads

b$.$ eBay$-$an e$-$commerce website that facilitates consumer$-$to$-$consumer and business$-$to$-$consumer sales

c$.$ Etsy$-$an e$-$commerce website that focuses on selling handmade or vintage items

d$.$

Boxed.com $-$ an online retailer that delivers bulk groceries and other products to consumers

e$.$ Amazon $-$ an online retailer that allows individuals and business to feature their products for sale