The Following Chart Indicates the Reductions in Total Losses Due

The following chart indicates the reductions in total losses due to theft if a jewelry store hires additional security guards. $$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Number } \\\text { of Guards }\end{array} & \begin{array} { c } \text { Dollar Value of } \\\text { Thefts Prevented }\end{array} \\\hline 1 & 150 \\2 & 240 \\3 & 310 \\4 & 360 \\5 & 400 \\6 & 430 \\\hline\end{array}$$ If the security guards can be hired for $45 per day, how many guards should the shop hire?

A) 2.
B) 3.
C) 4.
D) 5.

Correct Answer:

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