食管由里向外依次为

食管由里向外依次为
A.黏膜层、黏膜下层、肌层、纤维层
B.黏膜层、固有层、肌层、浆膜层
C.黏膜层、肌层、外膜层、固有层
D.黏膜层、黏膜下层、肌层、浆膜层
E.黏膜层、滑膜层、肌层、纤维层
正确答案：C