Based on data from the National Health Survey, the systolic blood pressures (SBP) in the population of women aged 18 to 24 are normally distributed with a mean of 114.8 mm Hg and a standard deviation of 13.1 mm Hg. Hypertension is commonly defined as a SBP above 140 mm Hg. If 4 different women between the ages of 18 and 24 are randomly selected, what is the probability that their mean SBP is greater than 140 mm Hg?

a. 3.85

b. 1.25

c. 0.9999

d. 0.4999

e. 0.0001