Palm Trees and Subtropical Plants Are Commonplace in Land's End

Palm trees and subtropical plants are commonplace in Land's End, England, whose latitude is the equivalent of Labrador in coastal Canada, where the local flora is subarctic. Which statement best explains why this apparent anomaly exists between North America and Europe?

A) Labrador does not get enough rainfall to support the subtropical flora found in Land's End.
B) Regions such as Labrador are actually colder than England because colder arctic air is pulled down to eastern North America and not to England.
C) Rainfall fluctuates greatly in England; rainfall is consistently high in Labrador.
D) Labrador is too windy to support tall plants, such as palm trees.
E) Labrador receives sunlight of lower duration and intensity than does Land's End.