单项选择题

A.隔离层、粉衣层、糖衣层、有色糖衣层
B.隔离层、糖衣层、粉衣层、有色糖衣层
C.粉衣层、隔离层、糖衣层、有色糖衣层
D.粉衣层、糖衣层、隔离层、有色糖衣层