单选题 The findings of the experiment show that______.

A、 errors are more likely when a referee keeps close to the ball
B、 the farther the referee is from the incident, the fewer the errors
C、 the more slowly the referee runs, the more likely will errors occur
D、 errors are less likely when a referee stays in one spot

【正确答案】 A

【答案解析】提示出现在第四段第二句，以及第六段第二行。