单项选择题

His failure to observe the safety regulations resulted in an accident to the machinery.

A.因为他未能遵守安全规则,导致机器出了故障。
B.他在遵守机器安全操作规则上失败了,结果出了事故。
C.他没有看清楚安全守则,结果机器出了毛病。
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