Refer to the Figure Shown

Refer to the figure shown.
Which of the following correctly matches the process with the numerical label?

A) 1 = diffusion; 2 = diffusion; 3 = convection; 4 = diffusion
B) 1 = convection; 2 = diffusion; 3 = diffusion; 4 = diffusion
C) 1 = diffusion; 2 = convection; 3 = diffusion; 4 = convection
D) 1 = convection; 2 = diffusion; 3 = convection; 4 = diffusion