TS EAMCET Medical 2015 Paper

Which of the two statements together supports that respiratory pathway is an ‘amphibolic pathway’ ?
(I) Fats breakdown to glycerol and fatty acids, subsequently yields acetyl co-enzyme ‘A’.
(II) In respiration, C-C bonds of complex compounds breakdown through oxidation leading to release of energy.
(III) Acetyl coenzyme ‘A’ from the respiratory pathway is withdrawn for the synthesis of fatty acids.
(IV) Proteins are degraded by protease to amino acids and enter the respiratory pathway