During What Climatologists Call the Little Ice Age

During what climatologists call the Little Ice Age,

A) people in much of northern Europe migrated southward.
B) the climate changed dramatically, with much of Europe experiencing colder, drier summers.
C) Europeans were forced to develop ways to use marginal lands such as marshes.
D) Europe experienced about five centuries of a colder, wetter climate.
E) the changed climate hit Europe especially hard during the 1400s.