Time spent waiting in line for each moviegoer at each of four movie theaters in Downtown San Francisco was measured on a Saturday night. The frequencies for each amount of minutes spent waiting in line are shown on the histograms below.

Four histograms

Consider the variable time$-$spent$-$waiting$-$in$-$line. Which of the theaters would you expect to have the smallest standard deviation, and why?

Group of answer choices

Theater A because it looks more normal $($bell$-$shaped$)$ than the others.

Theater B because it is roughly uniform.

Theater C because it has the most values close to the mean.

Theater D because there appears to be no pattern to the responses.