Answer to Question 1
C
Pain occurs at bedtime because the stomach is empty, but the gastric juices are still high. Pain is absent in the morning when the digestive juices are low and when the stomach is filled with food.
Answer to Question 2
A
Primary hyperthyroidism is also known as Grave disease or toxic goiter. Medications containing iodine, such as amiodarone (an antidysrhythmic heart medication), can predispose to hyperthy-roidism. In addition, it has been discovered recently that people who smoke have nearly twice the risk of developing hyperthyroidism when compared with nonsmokers.