Without performing detailed calculations, which of the following yields the same mass of CO₂(g) per gram of compound as does ethanol, CH₃CH₂OH, when burned in excess oxygen? 

(a) H₂CO;

(b) HOCH₂CH₂OH;

(c) HOCH₂CH;

(d) CH₃OCH₃; 

(e) C₆H₅OH.