Which of the Following Distributions Is Appropriate to Measure the Length

Short Answer

Which of the following distributions is appropriate to measure the length of time between arrivals at a grocery checkout counter? $\begin{array}{|l|l|}\hline\text { A. } & \text { Uni form. } \\\hline \text { B. } & \text { Normal. } \\\hline \text { C. } & \text { Exponential. } \\\hline \text { D. } & \text { Poisson. } \\\hline\end{array}$