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

Context:

P-Model (also typset as P-MODEL and P. Model) was a Japanese electronic rock band started in 1979 by frontman Susumu Hirasawa. The band has experienced many lineup revisions over the years but Hirasawa was always at the helm of operations. P-Model officially disbanded in 2000, although many of its members continue to release solo albums and collaborate with each other on different projects.

Hypothesis: P-Model disbanded in 2000 due to the declining health of frontman Susumu Hirasawa.
Available choices:
 a). Yes.
 b). It's impossible to say.
 c). No.
b).