—Can you pass me the potatoes?

—__________

A．Sorry,they are too heavy for me to carry.

B．Sorry,they don’t taste good.

C．Don’t you think they are delicious?

D．Don’t you think you’ve had enough?

下列哪一项是扁平苔藓最典型的病理变化（）

A.颗粒层明显

B.棘层内疱形成

C.基底层细胞变性液化

D.角化层消失

E.上皮钉突伸长变粗