Ultraviolet Radiation Is Hard to Observe Primarily Because

Multiple Choice

Ultraviolet radiation is hard to observe primarily because:

A) the Earth's atmosphere easily absorbs it
B) no space-based telescopes operate at ultraviolet wavelengths
C) only the lowest mass stars emit ultraviolet light
D) very few objects emit at ultraviolet wavelengths
E) the Earth emits too much ultraviolet background light