Which of the following statements about Web $2\mathrm{.}0$ is true?

Question $2$ options:

a$)$

Social media turned Wikipedia into one of the most profitable sites on the Internet.

b$)$

It is significant how quickly the Web $2\mathrm{.}0$ revolution started and failed in a short span of time.

c$)$

It is important to joust over the precise definition of Web $2\mathrm{.}0.$

d$)$

It refers to the static websites and transaction$-$focused storefronts.

e$)$

Peer production is leveraged to create much of the open source software that supports many of the Web $2\mathrm{.}0$ efforts.