Why Do Electron Microscopes Have a Better Resolution Versus Light

Why do electron microscopes have a better resolution versus light microscopes?

A) The lenses, knobs, and strength of the electron beam can all be highly controlled, which also explains why electron microscopes are so expensive.
B) An electron beam has a wavelength of about 800 nm, and resolution improves with larger wavelengths.
C) An electron beam has a wavelength of about 1 nm, and resolution improves with smaller wavelengths.
D) The additional steps necessary to prepare the sample for viewing provide the improved resolution.
E) The lenses used to focus the electron beam are more adjustable than the ones in a light microscope.