题目：
An analyst does research about liquidity. Which of the following statements about liquidity is least accurate（）
A. A decrease in a dealer's bid-ask spread decreases in liquidity.
B. On-the-run U. S. Treasury securities provide more liquidity than off-therun U. S. Treasury securities.
C. Standard practice for pricing liquid bond is a pricing service of dealer price quotas.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A
