In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.4. Answer parts (a) (d) below (a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 493 The probability that a randomly selected medical student who took the test had a total score that was less than 493 is 9 (Round to four decimal places as needed ) (b) Find the probability that a randomly selected medical student who took the test had a total score that was between 498 and 510 The probability that a randomly selected medical student who took the test had a total score that was between 498 and 510 is |9 (Round to four decimal places as needed ) (c) Find the probability that a randomly selected medical student who took the test had a total score that was more than 522. The probability that a randomly selected medical student who took the test had a total score that was more than 522 is |0 (Round to four decimal places as needed ) (d) Identify any unusual events Explain your reasoning Choose the correct answer below A. None of the events are unusual because all the probabilities are greater than 0.05 O B. The event in part (c) is unusual because its probability is less than 0 05 O C. The event in part (a) is unusual because its probability is less than 0.05. O D. The events in parts (a) and (b) are unusual because their probabilities are less than 0 05