The land-sea distribution or the positions of the world's continents and major oceans influences

Question:The land-sea distribution or the positions of the world's continents and major oceans influences

1.the major pressure belts that develop from the general circulation of the atmosphere

2.the development of the mid-latitude cyclonic depressions, at the convergence zone between polar and subtropical air masses

3.both (a) and (b)

4.None of the above

Answer:3