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

Context:

Jeffrey Steven Pilson (born January 19, 1959, Lake Forest, Illinois) is an American multi-instrumentalist best known for his long stint in the band Dokken. He was also a member of Dio for part of the 1990s and has been the bassist for Foreigner since 2004. Although he is known primarily for his work as a bassist, Pilson also plays guitar, cello, keyboards, piano, and mellotron.

Hypothesis: Pilson was a long time member of the bank Dokken.
OPT: - Yes; - It's impossible to say; - No;
Yes