Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using the following options.
A. One process occurs during day time and the other at night
B. Both the processes cannot happen simultaneously
C. Both processes can happen together because the diffusion coefficients of water vapours and `CO_(2)` are different
D. The above processes happen only during night time
