Choose the equation of reaction that correctly represents anaerobic respiration in muscles:

Glucose → Pyruvate $\displaystyle \xrightarrow[\text { of } \mathrm{O}_{2}]{\text { Absence }}$ Ethanol $\displaystyle +\mathrm{CO}_{2}+$ Energy

Glucose $\displaystyle \xrightarrow{\mathrm{O}_{2}}$ Pyruvate $\displaystyle \xrightarrow{\mathrm{O}_{2}}$ Energy

Glucose $\displaystyle \xrightarrow{\mathrm{O}_{2}}$ Pyruvate $\displaystyle \xrightarrow[\text { oxygen }]{\text { Lack of }}$ Ethanol + Energy

Glucose → Pyruvate $\displaystyle \xrightarrow[\text { oxygen }]{\text { Lack of }}$ Lactic acid + Energy