为了普及环保知识，增强环保意识，某大学随机抽取30名学生参加环

为了普及环保知识，增强环保意识，某大学随机抽取30名学生参加环保知识测试，得分（十分制）如图所示，假设得分值的中位数为m_e，众数为m_o，平均值为，则（　）

A. m_{e =}m_{o =} B.m_{e =}m_o< C. m_e< m_{o <} D. m_{o <}m_{e <}

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为了普及环保知识，增强环保意识，某大学随机抽取30名学生参加环

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