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．uses electronic instruments
B．enables man to alter the weather
C．makes weather prediction easier
D．gives the scientist information not obtained readily otherwise