This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Basic electrical rhythm is not seen in? 
Select and explain. 
A. Stomach, B. Duodenum, C. Esophagus, D. Cecum
C: Esophagus
Answer: C: Esophagus 
Explanation: Ans. is 'c' i.e., Esophagus lRef: Ganong 24th/e p. 5041