Which of the following about a well functioning market is FALSE（）

A. numerous buyers and sellers are willing to trade at prices about and below the current price.

B. the current price of a security fully reflects all the information currently available about the security.

C. market participants can buy and sell quickly at a known price.

以下各层组织中，哪层组织是全身各处皮肤都完整存在的（）。

A.角质层

B.透明层

C.颗粒层

D.棘层

E.基底层