What is the difference between a standard normal distribution and a nonstandard normal​ distribution? Choose the correct answer below. A. The standard normal distribution has a standard deviation that is less than or equal to the​ mean, while a nonstandard normal distribution has a standard deviation that is greater than the mean. B. The standard normal distribution has a mean of 0 and a standard deviation of​ 1, while a nonstandard normal distribution has a different value for one or both of those parameters. C. The standard normal distribution has a standard deviation that is greater than the​ mean, while a nonstandard normal distribution has a standard deviation that is less than or equal to the mean. D. The standard normal distribution has a mean of 1 and a standard deviation of​ 0, while a nonstandard normal distribution has a different value for one or both of those parameters.