An analyst does research about cash flow statement. When a company finances accounts payable, an immediate effect on its cash flow statement is most likely to:（）

A. decrease operating cash flow.

B. increase operating cash flow.

C. shift cash outflow from operation to a later time period.

证券经纪人可以利用投资者账户买卖证券，只要在投资者需卖出时能满足其要求。( )