Last Year, Nine Employees of an Electronics Company Retired $\begin{array} { l l l l l l l l l } 51 & 61 & 62 & 57 & 50 & 67 & 68 & 58 & 53 \end{array}$

Last year, nine employees of an electronics company retired. Their ages (in years) at retirement are listed below. Find the mode(s) for the given sample data. $\begin{array} { l l l l l l l l l } 51 & 61 & 62 & 57 & 50 & 67 & 68 & 58 & 53 \end{array}$

A) $51 \mathrm { yr } , 61 \mathrm { yr } , 62 \mathrm { yr } , 57 \mathrm { yr } , 50 \mathrm { yr } , 67 \mathrm { yr } , 68 \mathrm { yr } , 58 \mathrm { yr } , 53 \mathrm { yr }$
B) $58 \mathrm { yr }$
C) $58.6 \mathrm { yr }$
D) no mode