Why Are Humid Middle- Latitude Climates with Severe Winters not

Multiple Choice

Why are humid middle- latitude climates with severe winters not found in the Southern Hemisphere?

A) It is too warm in the Southern Hemisphere to have severe winters.
B) The Southern Hemisphere is dominated by warm winds.
C) Mountains block the flow of moist air in the Southern Hemisphere.
D) The Southern Hemisphere is dominated by oceans.
E) Coastal regions in the Southern Hemisphere are mostly volcanic.