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Duolingo Is a Free App That Includes In-App Advertising

Question 42

Multiple Choice

Duolingo is a free app that includes in-app advertising.There is also an upgraded version that consumers can purchase.What type of business model does Duolingo use?


A) Both franchise and advertising
B) Both freemium and differentiation
C) Both freemium and advertising
D) Peer-to-peer

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