Johnson is an honest businessman. Our company and his have had a lot of ______ in the past few years.

A．agreements

B．sales

C．deals

D．bargains

关于融资融券保证金比例及计算，( )选项是正确的。

A．客户融资买入证券时，融资保证金比例不得低于50%，

B．融资保证金比例=保证金/(融资买入证券数量×买入价格)×100%

C．客户融券卖出时，融券保证金比例不得低于50%

D．融券保证金比例=保证金/(融券卖出证券数量×卖出价格)×100%