Last year, nine employees of an electronics company retired. Their ages at retirement are listed below.
54 63 67 50 57 61 62 58 51

A. 54 yr, 63 yr, 67 yr, 50 yr, 57 yr, 61 yr, 62 yr, 58 yr, 51 yr
B. 58.1 yr
C. no mode
D. 58 yr

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