Suppose x has a distribution with = 66 and = 6. If random samples of

Suppose x has a distribution with μ = 66 and σ = 6.
If random samples of size n = 16 are selected, can we say anything about the x distribution of sample means?

a). No, the sample size is too small.
b). Yes, the x distribution is normal with mean μ x = 66 and σ x = 1.5.
c). Yes, the x distribution is normal with mean μ x = 66 and σ x = 6.
d). Yes, the x distribution is normal with mean μ x = 66 and σ x = 0.4.