The author admires Anthony. Trollope particularly for ______.

A．is basically a self-taught occupation and no instructions on how to deal with it are of any practical use
B．is a "trial and error" process and it does not count whether you have the gift for writing or not
C．for a living is the most difficult and risky of all careers, full of frustration and discouragement
D．sometimes provides good hopes of winning public praise and escaping humiliating poverty

A．a professional writer
B．an instructor of writing
C．an educator
D．a publisher