Mother told me ______ near the river.

A．don’t play

B．not to play

C．not play

D．not playing

某优先股面值为100元，发行价格为96元，发行成本为2%，每年付息1次，固定股息率为6%，则该优先股资金成本是______。

A．6.38%
B．7.14%
C．3.62%
D．2.86%