In Regards to Knowledge of the Americas Prior to the Fifteenth

In regards to knowledge of the Americas prior to the fifteenth century, most Europeans

A) were aware of the travels of the Norse seaman Leif Eriksson in the eleventh century.
B) believed the Americas to consist of little more than several small islands.
C) were entirely unaware of the existence of the Americas.
D) assumed that the Americas were largely unpopulated.
E) had only heard of America from the travels of Marco Polo.