The Overnight Shipping Business Has Skyrocketed in the Last Ten

The overnight shipping business has skyrocketed in the last ten years. The single greatest predictor of acompany?s success has been proven time and again to be customer service. A study was conducted to study thecustomer satisfaction levels for one overnight shipping business. In addition to the customer?s satisfaction level,the customers were asked how often they used overnight shipping. The results are shown below in thefollowing table. A customer is chosen at random. Given that the customer uses the company more than fivetimes per month, what is the probability that they expressed low satisfaction with the company? $\begin{array} { c | c c c | c } & { \text { Satisfaction level } } & \\\text { Frequency of Use } & \text { High } & \text { Medium } & \text { Low } & \text { TOTAL } \\\hline < 2 \text { per month } & 250 & 140 & 10 & 400 \\2 - 5 \text { per month } & 140 & 55 & 5 & 200 \\> 5 \text { per month } & 70 & 25 & 5 & 100 \\\hline \text { TOTAL } & 460 & 220 & 20 & 700\end{array}$

A) $\frac { 1 } { 20 }$
B) $\frac { 1 } { 4 }$
C) $\frac { 1 } { 140 }$
D) $\frac { 23 } { 140 }$