The Biochemical Pathway That the Methyl Red Test Confirms Is $\rightarrow$

Multiple Choice

The biochemical pathway that the methyl red test confirms is

A) glucose $\rightarrow$ pyruvic acid $\rightarrow$ mixed acid fermentation.
B) pyruvic acid $\rightarrow$ glucose $\rightarrow$ mixed acid fermentation.
C) glucose $\rightarrow$ pyruvic acid $\rightarrow$ acetoin $\rightarrow$ diacetyl KOH.
D) butylene $\rightarrow$ pyruvic acid $\rightarrow$ diacetyl KOH.