The Gas in Interstellar Space Between the Stars Is Very

Multiple Choice

The gas in interstellar space between the stars is very tenuous ("thin") .Near a hot star,this gas is heated to a high temperature.Any such hot,tenuous gas emits light

A) at all wavelengths,peaking at a certain wavelength or color.
B) at no wavelength,because hot thin gases do not emit light.
C) only at specific wavelengths ("spectral lines") ,and these spectral lines do not change in wavelength as the temperature changes.
D) only of specific colors ("spectral lines") whose wavelengths change as the temperature changes.