The answer in B. For complicated statistics reasons the Central Limit Theorem states that, for sample sizes of above 25 (or 30 depending on the text!), the distribution of sample means is approximately normal regardless of the distribution of the parent distribution
N/4.3 = 9.4
4.3 × n/4 = 9.4 × 4.3
n = 40.42
Code:!#@$% Means there is a "Cuss word for adults to say"
I'm assuming this is just a simple addition problem so 12,383 miles plus 113,211 miles is equal to 125 594 miles