When the Kelvin Wave Hits the Coast of South America

When the Kelvin wave hits the coast of South America,

A) the thermocline is at a much more shallow level as cold water is concentrated at the surface.
B) the thermocline is found much deeper as warm water is concentrated at depth.
C) the thermocline is at a much more shallow level as warm water is concentrated at depth.
D) the thermocline is at a much more shallow level as cold water is concentrated at depth.