【单选题】Which of the following statement on flying buttress of Gothic architecture is not correct?
A.
Flying buttress is an arch or part of an arch that joined the outside wall of a large building with piers.
B.
Flying buttress is firstly developed by Romanesque architecture.
C.
One of the functions of flying buttress is to support buildings.
D.
Flying buttress were often decorated with intricate carvings.