How Long Did Real Cowboys Live? One Answer May Be

How long did real cowboys live? One answer may be found in the book The Last Cowboys by Connie Brooks (University of New Mexico Press) . This delightful book presents a thoughtful sociological study of cowboys in West Texas and Southeastern New Mexico around the year 1890. Assume that a sample of 32 cowboys gave the following years of longevity: Make a stem-and-leaf display for these data.
$$\begin{array} { l l l l l l l l l l l } 58 & 52 & 67 & 86 & 72 & 66 & 99 & 88 & 85 & 91 & 91 \\92 & 68 & 68 & 87 & 86 & 73 & 61 & 70 & 75 & 72 & 73 \\85 & 84 & 91 & 57 & 77 & 76 & 84 & 93 & 58 & 49 &\end{array}$$

A) $\begin{array} { l l l l l l l l l } 4 & 9 = 49 & \text { years } & & \\4 & 9 & & & & & & \\5 & 8 & 8 & 7 & 2 & & & & \\6 & 8 & 8 & 7 & 6 & 1 & & & \\7 & 7 & 6 & 5 & 3 & 3 & 2 & 2 & 0 \\8 & 8 & 7 & 6 & 6 & 5 & 5 & 4 & 4 \\9 & 9 & 8 & 3 & 2 & 1 & 1 & 1 &\end{array}$
B) $\begin{array} { l l l l l l l l l l } 4 & 9 &= & 49 & \text { years } & & & \\4 & 9 & & & & & & & \\5 & 2 & 7 & 8 & 8 & & & & & \\6 & 1 & 6 & 7 & 8 & & & & & \\7 & 0 & 2 & 2 & 3 & 3 & 5 & 7 & 8 \\8 & 3 & 4 & 5 & 5 & 6 & 6 & 7 & 8 \\9 & 1 & 1 & 1 & 2 & 3 & 8 & 9 &\end{array}$
C) $\begin{array} { l l l l l l l l l } 4 & 9 & = & 49 & \text { years } \\4 & 9 & & & & & & \\5 & 8 & 8 & 7 & 2 & & & & \\6 & 8 & 7 & 6 & 1 & & & & \\7 & 8 & 6 & 5 & 4 & 3 & 2 & 2 & 0 \\8 & 8 & 7 & 6 & 6 & 5 & 5 & 4 & 3 \\9 & 9 & 8 & 3 & 2 & 1 & 1 & 1 &\end{array}$
D) $\begin{array} { l } 4&9 = 49 \text { years } \\4&9\\5&2&7&8&8\\6&1&6&7&8&8\\7&0&2&2&3&3&5&6&7\\8&4&4&5&5&6&6&7&8\\9&1&1&1&2&3&9\\\end{array}$
E) $\text { none of these choices }$