The Cities of Vancouver,Canada,and Regina,Saskatchewan,are at About the Same Latitude,but

The cities of Vancouver,Canada,and Regina,Saskatchewan,are at about the same latitude,but Regina has much hotter summers and much colder winters than Vancouver.Why?

A) They are not at the same exact latitude.
B) The ocean near Vancouver moderates the temperature.
C) Fresh water is more likely to freeze than salt water.
D) Regina is much windier, due to its location in Canada.
E) Vancouver experiences more chinook winds.