This Chart Shows the Fees for an 18-Hole Round of Golf

Multiple Choice

This chart shows the fees for an 18-hole round of golf for each of the last 5 years at a local municipal golf course. Assume that this chart defines a function with the name of f. State the domain of f. $$\begin{array} { c | c } \text { Year } & \text { Fee } \\\hline 2008 & \$ 22 \\2009 & \$ 24 \\2010 & \$ 26 \\2011 & \$ 26 \\2012 & \$ 30\end{array}$$

A) {(2008, 22) , (2009, 24) , (2010, 26) , (2011, 26) , (2012, 30) }
B) {2008, 2009, 2010, 2011, 2012}
C) {22, 24, 26, 30}
D) {(22, 2008) , (24, 2009) , (26, 2010) , (26, 2011) , (30, 2012) }