2. 宋朝的王安石喜欢对字义钻牛角尖 ，他很得意地对苏东坡说，" '波'是水的皮。"
苏东坡反讥说，"难道 '滑' 是水的骨？"

Which one of the following is NOT correct?

A. "波" 是会意字
B. "尖" 是会意字
C. "滑" 是会意字
D. None of the above