Test scores at a high school are known to follow a Normal distribution with mean of 41.9 points and standard deviation of 4.2 points. Suppose we collect a random sample of 63 tests. What is the probability that the average test score of this group will be exactly 41.96 points? a. 0.8186 b. We cannot answer this question with the information given. c. 0.9100 d. 0.1814 e. 0.0000