Why do plates moves? A. Convection currents in the Lithosphere move the plates.

B. Lithosphere plates move into a trench away from the ridge.

C. Lithosphere plates move away at a ridge.

D. Convection currents in the Mantle move the plates.

I believe the answer is D, there is a chance the answer is a but im not too sure

Tectonic shift is the movement of the plates that make up Earth's crust. ... The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift.