Determine whether the graph shown could represent a variable with a normal distribution. Explain your reasoning. If the graph appears to represent a normal distribution, estimate the mean and standard deviation. 18 21 24 27 30 33 36 39 42 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The graph could not represent a variable with a normal distribution because the graph is skewed to the right. O B. The graph could not represent a variable with a normal distribution because the curve has two modes. O C. The graph could not represent a variable with a normal distribution because the curve crosses the x-axis. O D. The graph could not represent a variable with a normal distribution because the graph is skewed to the left. O E. The graph could represent a variable with a normal distribution because the curve is symmetric and bell-shaped. Its mean is approximately , and its standard deviation is approximately ] Round to one decimal place as needed. O F. The graph could not represent a variable with a normal distribution because the curve is constant