Many Towns and Cities in the High Middle Ages

Many towns and cities in the High Middle Ages:

A) grew rapidly to populations of over 400,000 people by 1150.
B) grew through continuous immigration from the countryside.
C) were built of stone and were largely impervious to fire.
D) were grimly aware of crowd diseases and emphasized proper sanitation where possible.
E) were controlled by either a local noble or a monastery.