What are some examples of companies that have gained from the sharing economy? Airbnb encourages people to use their own personal cars as taxis to...

What are some examples of companies that have gained from the sharing economy?

Airbnb encourages people to use their own personal cars as taxis to make some extra cash in their free time.
Uber acts as a middleman for people to cash in on their unused rooms and houses and let them out as lucrative accommodation.
Companies like Airbnb act as a middleman for people to cash in on their unused rooms and houses and let them out as lucrative accommodation.
a) Only statement 1 is correct.
b) Only statement 2 is correct.
c) Only statement 3 is correct.
d) Statements 1 and 3 are correct.
e) Statements 2 and 3 are correct.
f) All statements are incorrect.