Which Is the Correct Breakdown and Translation of the Term

Which is the correct breakdown and translation of the term hypocapnia?

A) hypo (over) + capn (breathing) + ia (condition) = heavy breathing
B) hypo (over) + capn (carbon dioxide) + ia (condition) = excessive carbon dioxide
C) hypo (under) + capn (breathing) + ia (condition) = shallow breathing
D) hypo (under) + capn (carbon dioxide) + ia (condition) = insufficient carbon dioxide