Constrictions of esophagus when measured from upper incisors are prese – McqOptions

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1.	Constrictions of esophagus when measured from upper incisors are present at ?
A.	15 cm, 20 cm, 40 cm
B.	15 cm, 25 cm, 40 cm
C.	20 cm, 30 cm, 40 cm
D.	30 cm, 40 cm, 60 cm
Answer» C. 20 cm, 30 cm, 40 cm

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