Assume that the random variable X is normally distributed, with mean u = 50 and standard deviation o = 9. Compute the probability. Be sure to draw a normal curve with the area corresponding to the probability shaded. P(X S 40) Which of the following shaded regions corresponds to P(X s 40)? O A. O B. O C. O X X X 40 50 40 50 40 50 P(X S 40) = (Round to four decimal places as needed.)