What is the difference between a methylotroph and methanotroph?

A) Methylotrophs are strict anaerobes, while methanotrophs are strict aerobes.
B) Methylotrophs use organic carbon lacking C-C bonds as electron donors and carbon sources, while methanotrophs exclusively use methane as an electron donor and carbon source.
C) Methylotrophs produce organic carbon lacking C-C bonds, while methanotrophs exclusively produce methane.
D) Methylotrophs are in Proteobacteria, while methanotrophs are in Archaea.