The Fez Became a Symbol of Reform as a Part

The fez became a symbol of reform as a part of Turkish military dress because

A) they wanted a compromise between a hat and a turban.
B) the fez was brimless and could be used during Islamic prayer services.
C) the European style of leather-billed hats was thought to be ugly.
D) it was better suited to new artillery weapons.
E) it was distinctly different from the uniform of the Janissaries.