The average number of acres burned by forest and range fires in a large county is 3,800 acres per year, with a standard deviation of 700 acres. The distribution of the number of acres burned is normal. Compute the z-score for an occurrence of 4,500 acres burned in a given year.
a) 0.4286
b) 0.9286
c) 1.0714
d) 2.0714