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【单选题】
在继电器接触器控制电路中，只要交流接触器的吸引线圈通电，接触器就动作，使（）。
A.
主触头和辅助触头闭合，电动机运转
B.
主触头闭合，辅助触头断开，电动机运转
C.
主常开触头和常闭触头闭合，电动机运转
D.
主触头和辅助触头断开，电动机停转
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