A company has offices in two different countries. Employee commute times at both locations are skewed toward longer commutes. Every month, the company takes separate random samples of 10 employees from each location for a survey. Each time, they look at the difference in the mean commute time sampled from each location (x̄A - x̄B). What do we know about the shape of the sampling distribution of x̄A - x̄B, and why? Choose 1 answer: A. It's exactly normal, because both populations are normally distributed. B. It's approximately normal, because both sample sizes are at least 30. C. It's not normal, because the populations are skewed, and both sample sizes are less than 30. D. The shape cannot be determined since we don't know the shape of either population distribution.