一般而言，下列筹资方式中，资金成本最低的是( )。
A．发行普通股票
B．发行优先股票
C．长期借款
D．发行债券
参考答案：C
People in many countries were sad at the news ______ Samaranch, Lifetime Honorary President of the Olympic Committee, died at 89 on April 21st.
A．which
B．that
C．what
D．when
