问题如下：
Participating preferred stocks entitle shareholders:
选项：
A.the participation in the decision-making process of the company.
B.the right to convert a certain number of shares into common stock.
C.to obtain additional dividends when the company's performance exceed the pre-determined level.
解释：
C is correct.
If company's profits exceed pre-determined levels, preferred stock's shareholders will receive an additional dividends.
Participating preferred stocks 请解释一下这个概念
