N the summer, the polar jet stream is usually north of the United States. In the winter, the polar jet moves down, often past the place marked with an "X".

How will the weather at point X change as the polar jet moves from north of it to south of it?
A.
The weather will stay the same.
B.
It will get warmer.
C.
It will get cooler.
D.
The winds will change direction.