【单选题】

{{I}}{{B}}Questions 18 to 20 are based on the following passage.At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage.{{/I}}{{/B}} What do good negotiators and average negotiators have in common

A、Experience in negotiating.
B．
A、high level of intelligence.
C．The time they spend on preparation.
D．The amount of pay they receive.