The Political Power of Some Queens of the High Middle

The political power of some queens of the High Middle Ages in Europe is reflected in the:

A) right of queens to choose which son would become king after the death of his father.
B) number of women included in manuscript illuminations from the period.
C) right of queens to attend medieval universities.
D) power of the queen in the game of chess.
E) number of books that were dedicated to queens during this period.