A new drug is believed to lower the heart rate in people with diabetes, and is being tested in eight patients. For each of these patients, we measure the rhythm heart rate before (variable X) and after (variable Y) taking the drug. Here are the results which were collected: X 74 68 84 53 75 87 69 71 Y 66 67 62 47 56 60 63 72 Can it be said that the average heart rate after taking the drug is different from the heart rate before taking the drug? Determine the critical point order 5% of the appropriate test, then conclude with Cl or C2, with: -Cl: the test is significant at the threshold of = 5%. -C2: the test is not significant at the threshold of = 5%. Choose between the options: a- 1.6449 and C1 b- 1.6449 and C2 c- 1.9599 and C1 d- 1.9599 and C2 e- 2.3263 and C1 f- 2.3263 and C2 g- 2.5758 and C1 h- 2.5758 and C2