Choice A reason:

Pain and swelling in the lower abdomen are not typical symptoms of hiatal hernia. These symptoms are more characteristic of inguinal or umbilical hernias.

Choice B reason:

This statement is correct. Heartburn and regurgitation of stomach acid are common symptoms of hiatal hernia. The herniated portion of the stomach can allow stomach acid to flow back into the esophagus, leading to heartburn and regurgitation.

Choice C reason:

Dyspnea and difficulty breathing are not typical symptoms of hiatal hernia. These symptoms may be present in other respiratory or cardiovascular conditions.

Choice D reason:

Pain and tenderness around the umbilicus are not specific to hiatal hernia. These symptoms may indicate other conditions such as umbilical hernia or appendicitis.