A Jar Filled with Gas Is Placed Directly in Front

Multiple Choice

A jar filled with gas is placed directly in front of a second jar filled with gas. Using a spectroscope to look at one jar through the other you observe dark spectral lines. The jar closest to you contains

A) gas at the same temperature as the other jar.
B) the cooler gas.
C) gas at very high pressure.
D) the hotter gas.
E) the exact same gas as the other jar.