Plants are removed from patient's room during night because

Options

A. they produces `CO_(2)` at night in more concentratin
B. they produces `CO_(2)` all the time but releases `O_(2)` also in day time
C. they conslume `O_(2)` at night
D. they do not photosynthwesize at night therefore fail to deplete `CO_(2)` of the room hence their presence will increases `CO_(2)`

Answer

C