What is the atmosphere of the moon called?

A Exosphere
B Chromosphere
C Heliosphere

The moon might not be an exoplanet, but it does have an exosphere, which consists of an extremely tenuous and low-density mixture of gases, primarily helium, hydrogen, argon, neon, and other trace elements. The exosphere is influenced by solar radiation, lunar gravity, and interactions with the moon’s surface.

The correct answer is Exosphere.