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. X 24 27 30 33 36 39 42 45 48 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. OA. The graph could not represent a variable with a normal distribution because the graph is skewed to the right. OB. The graph could not represent a variable with a normal distribution because the curve is constant. OC. The graph could not represent a variable with a normal distribution because the curve crosses the x-axis. OD. 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.) OE. The graph could not represent a variable with a normal distribution because the curve has two modes. OF. The graph could not represent a variable with a normal distribution because the graph is skewed to the left.