Consider Two Restaurants Located Next Door to Each Other: Quick

Consider two restaurants located next door to each other: Quick Burger and The Sunshine Café. If Quick Burger opens a drive-through window, the increased traffic and noise will bother customers seated outside at The Sunshine Café. The table below shows the monthly payoffs to Quick Burger and The Sunshine Café when Quick Burger does and does not operate a drive-through window.  
$$\begin{array} { | l | c | c | } \hline & \begin{array} { c } \text { Quick Burger Operates a } \\\text { Drive-Thrmugh Windav }\end{array} & \begin{array} { c } \text { Quick Burger Daes Nat } \\\text { Operate Brive-Thraugh Window }\end{array} \\\hline \text { Quick Burper } & \$ 24,000 & \$ 15,000 \\\hline \text { The Surshine Café } & \$ 11,000 & \$ 23,000 \\\hline\end{array}$$ If Quick Burger has the legal right to operate a drive-through window, then the Sunshine Café would have to pay Quick Burger at least ________ per month to NOT operate a drive-through window.

A) $9,000
B) $11,000
C) $15,000
D) $24,000