Based on class notes, match each definition below to the correct type of revenue model.

$$ An e$-$commerce company that charges a fee to access content or services for a fixed period of time is using revenue model.

An e$-$commerce company that earns commission fees by directing traffic to other sites that result in a lead or sale is using revenue model.

An e$-$commerce company that earns revenue by charging a fee for each product or service purchased is using revenue model.

An e$-$commerce company that provides a basic product or service for free and an enhanced or upgraded product or service for a fee is using $.$ revenue model.

An e$-$commerce company that charges fees to other compnaies that place promotional content on its web site is using revenue model.

An e$-$commerce company that charges a fee for each individual usage of its service is using revenue model.

A$.$ a transaction

B$.$ a premium$/$fremium

C$.$ a sales

D$.$ a subscription

E$.$ an advertising

F$.$ an affiliate