Use the Table Below to Answer the Following Questions) Using

Use the table below to answer the following questions) using the standard Solver.
Coppell Services contracts with outsourcing partners to handle various customer service functions. Based on a study of call volumes provided by one of the firm's partners, the minimum number of staff needed for each hour of the day is as follows: $$\begin{array} { | l | l| } \hline \text { Hour } & \text { Minimum Staff Required } \\\hline 8 - 9 & 6 \\\hline 9 - 10 & 10 \\\hline 10 - 11 & 12 \\\hline 11 - \text { noon } & 10 \\\hline noon - 1 & 8 \\\hline 1 - 2 & 16 \\\hline 2 - 3 & 15 \\\hline 3 - 4 & 20 \\\hline 4 - 5 & 15 \\\hline\end{array}$$ Mr. Coppell hires 6 permanent employees and wants to staff the remaining requirements using part-time employees who work 4-hour shifts four consecutive hours starting as early as 8 A.M. or as late as 1 P.M.) .
-Which of the following best defines a binary variable?

A) It is a general integer variable that is restricted to being between -1 and 1.
B) It is a general integer variable that is restricted to being a multiple of 2.
C) It is a general integer variable that is restricted to being between 0 and 1.
D) It is a general integer variable that is restricted to being greater than 2.