Which Statement Is True with Regard to Thermohaline Circulation

Multiple Choice

Which statement is true with regard to thermohaline circulation?

A) Thermohaline circulation is caused by even and steady global heating of the ocean.
B) Thermohaline circulation is the result of heating of the ocean at high latitudes and cooling at low latitudes.
C) Thermohaline circulation is driven by density gradients.
D) Thermohaline circulation is primarily driven by wind.