Following Are Heights, in Inches, for a Sample of College

Following are heights, in inches, for a sample of college basketball players.
$\begin{array}{llllllllll}\hline 84 & 88 & 86 & 85 & 70 & 75 & 72 & 86 & 78 & 81 \\\hline 86 & 78 & 81 & 72 & 73 & 76 & 77 & 87 & 88 & 84 \\\hline\end{array}$

Find the sample standard deviation for the heights of the basketball players.

A) 6
B) 18
C) 80.4
D) 5.8