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

Context:

Charlotte Anley (1796–1893) was a 19th-century English didactic novelist, social and religious writer, composer and lyricist. She was a Quaker, and spent the years 1836–38 in Australia, researching for a report on women's prisons commissioned by Elizabeth Fry.

Hypothesis: Anley wrote novels for 50 years.

 (a). Yes;
 (b). It's impossible to say;
 (c). No;
(b).