单项选择题

A.隔离层-粉衣层-糖衣层-色糖衣层-打光
B.粉衣层-隔离层-糖衣层-色糖衣层-打光
C.粉衣层-糖衣层-隔离层-色糖衣层-打光
D.隔离层-色糖衣层-糖衣层-粉衣层-打光
E.隔离层-色糖衣层-打光-粉衣层-糖衣层