Which of the following statements sequences is correct to initiate inspiration? (i) The contraction of external intercoastal muscles raises the ribs and sternum. (ii) Volume of thorax increases in the dorsoventral axis. (iii) Increase in pulmonary volume. (iv) Intrapulmonary pressure decreases. (v) Volume of thorax increases in the anterior- posterior axis.

• A. (i), (ii), (iv), (v), (iii)
• B. (i), (ii), (iii), (iv), (v)
• C. (i), (ii), (iv), (iii), (v)
• D. (v), (i), (ii), (iii), (iv)