How Does the Rate of Seafloor Spreading Affect Sea Level

How does the rate of seafloor spreading affect sea level?

A) Faster spreading causes faster subduction, which pulls down continental margins.
B) Faster spreading produces broader ridges that displace water and expand the oceans.
C) Faster spreading heats up ocean waters causing them to expand and flood the land.
D) They have no effect because the rates of seafloor spreading do not change over time.