Which of the following statements is correct? (i) When we breathe in the ribcage moves upward and outward. (ii) When we breathe in the ribcage moves downward and inwards. (iii) When we breathe in diaphragm moves downward. (iv) When we breathe in diaphragm moves upward.

• A. (i) and (iv)                     
• B. (ii) and (iii)
• C. (i) and (iii)         
• D.        All the above
• E. None of these