The random variable X is normally distributed with mean 5 and standard deviation 25. The random variable Y is defined by Y = 4+2X. What are the mean and the standard deviation of Y? 
选项为:A:The mean is 20 and the standard deviation is 102.  B:The mean is 20 and the standard deviation is 50.  C:The mean is 22 and the standard deviation is 102.  D:The mean is 22 and the standard deviation is 100.  E:The mean is 22 and the standard deviation is 50.  请回答其中一个选项.