Trachea bifurcates at-: (A) T4-T5, (B) T5-T6, (C) T6-T7, (D) t7-t8
Answer is A. Ans. is 'a' i.e. T4-T5 Trachea extends from the lower border of cricoid cartilage opposite C6 to the upper border of TyLength of trachea - 10-11 cm*