Which of the Following Represents the Correct Order of Electron $\rightarrow$

Which of the following represents the correct order of electron flow in Complex I?

A) NADH $\rightarrow$ ubiquinone $\rightarrow$ Fe-S clusters $\rightarrow$ FMN
B) NADH $\rightarrow$ Fe-S clusters $\rightarrow$ FMN $\rightarrow$ ubiquinone
C) NADH $\rightarrow$ FMN $\rightarrow$ ubiquinone $\rightarrow$ Fe-S clusters
D) NADH $\rightarrow$ FMN $\rightarrow$ Fe-S clusters $\rightarrow$ ubiquinone
E) NADH $\rightarrow$ ubiquinone $\rightarrow$ FMN $\rightarrow$ Fe-S clusters