In the Early Holocene of Central and Southern Europe

In the early Holocene of central and southern Europe:

A) Pleistocene red deer, roe deer, and wild pig were replaced by woolly mammoth, rhinoceros, wild cattle, horse, and reindeer
B) Pleistocene woolly mammoth, rhinoceros, wild cattle, horse, and reindeer were replaced by red deer, roe deer, and wild pig
C) virtually all mammal populations dropped to very low levels
D) fresh water fish became the only reliable source of protein