GMAT Critical Reasoning (CR) | In New York there has been an explosion of public interest

In New York there has been an explosion of public interest in, and talent moving toward, internet startups over the last 5 years. The evidence of this explosion is that of the 100 or so internet startups currently active in the "New York Tech Meetup Group," 90 were founded over the course of the last 3 years.

The reasoning above assumes which one of the following?

(A)All of the 100 internet startups are commercially viable options.

(B)There were fewer than 90 internet startups that
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