Can we draw the following hypothesis from the context (see options)? 

Context:

Salad Days: "A Decade of Punk in Washington, DC (1980-90)" is a documentary written and directed by Scott Crawford. Released on December 19, 2014, the Kickstarter-funded film features early pioneers of the Washington, DC hardcore punk music scene over a decade (1980-1990) including Minor Threat, Fugazi, Bad Brains, Government Issue, Youth Brigade, Teen Idles, Rites of Spring, and others.

Hypothesis: Salad Days: "A Decade of Punk in Washington, DC (1980-90)" spans one decade of the hardcore punk music scene in Washington. 
Available choices:
(a). Yes.
(b). It's impossible to say.
(c). No.
(a).