The right option is a. heartburn
Heartburn is a painful sensation in the chest that results from gastric juices seeping back up into the esophagus.
Heartburn occurs when there is excessive backward flow of gastric juices from the stomach into the esophagus. Heartburn usually occurs after eating or when lying down and it begins as a burning sensation in the upper part of the stomach which later moves up into the chest. Heartburn occurs mostly in individuals over the age of 40 years.
