—Have you ______ him to join us in the research?

—No. He is a stubborn person and won’t listen to anyone.

A．persuaded

B．reminded

C．forced

D．allowed

同一支股票，其风险是客观的，但是有的人买有的人卖，这可能是因为买者和卖者的风险认知度有差异。( )