Shawn Fanning (born November 22, 1980) is an US-American computer programmer, entrepreneur, and angel investor. He developed Napster, one of the first popular peer-to-peer ("P2P") file sharing platforms, in 1999. The popularity of Napster was widespread and Fanning was featured on the cover of "Time" magazine.
Can we infer the following?
Shawn Fanning got rich of Napster

Available choices:
(a). Yes.
(b). It's impossible to say.
(c). No.
The answer is:
(b).