A Certain Population Is Strongly Skewed to the Right

Multiple Choice

A certain population is strongly skewed to the right.We want to estimate its mean, so we will collect a sample.Which should be true if we use a large sample rather than a small one?
I.The distribution of our sample data will be closer to normal.
II.The sampling model of the sample means will be closer to normal.
III.The variability of the sample means will be greater.

A) I only
B) II only
C) III only
D) I and III only
E) II and III only