A Probable Sequence of the Evolution of Cells Was
A) $\rightarrow$

A probable sequence of the evolution of cells was

A) autotroph $\rightarrow$ aerobic heterotroph $\rightarrow$ anaerobic heterotroph.
B) anaerobic heterotroph $\rightarrow$ aerobic heterotroph $\rightarrow$ autotroph.
C) anaerobic heterotroph $\rightarrow$ autotroph $\rightarrow$ aerobic heterotroph.
D) aerobic heterotroph $\rightarrow$ autotroph $\rightarrow$ anaerobic heterotroph.