Which of the statements about the residual alveolar ridge is incorrect （ ）

A、Residual alveolar ridge refers to the ridge-shaped alveolar bone and the overlying mucoperiosteum tissue remaining after tooth loss.
B、When the alveolar process is unevenly resorbed, sharp bony points can form.
C、The residual alveolar ridge is always in the process of continuous bone resorption since the day it was formed.
D、The bone resorption rate of the remaining alveolar ridge was basically constant.