4) A random sample of size 25 is to be taken from a population that is Normally distributed with mean 60 and standard deviation 10. The mean x of the observations in our sample is to be computed. The sampling distribution of (A) is Normal with mean 60 and standard deviation 10. (B) is Normal with mean 60 and standard deviation 2. (C) is approximately Normal with mean 60 and standard deviation 10. (D) has an unknown shape with mean 60 and standard deviation 10. (E) has an unknown shape with mean 60 and standard deviation 2