The January Utility Bills (In Dollars) for 20 Residents of a Large

The January utility bills (in dollars) for 20 residents of a large city are listed below. Find the range of the data. $\begin{array} { l l l l l l l l l l } 70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71 \end{array}$
$\begin{array} { l l l l l l l l l l } 67 & 71 & 70 & 74 & 69 & 68 & 71 & 71 & 71 & 72 \end{array}$

A) $7
B) $2.98
C) $2
D) $1.73