Which term (s) in the van deemter equation does (do) not affect the plate height?

In the van deemter equation, plate height (H) = A + B/u + Cu.

So, A, B, U, and C affects the plate height. A is the eddy diffusion term, B is the longitudinal or ordinary diffusion term, C is the nonequilibrium or resistance to mass transfer coefficient, and U is the linear velocity.