Which of the Following Represents the Correct Order for the Locations

Which of the following represents the correct order for the locations where rhizobia develop as a root nodule is being formed,from earliest to latest in the development?

A) Soil $\rightarrow$ root hair $\rightarrow$ cortex
B) Soil $\rightarrow$ cortex $\rightarrow$ root hair
C) Root hair $\rightarrow$ cortex $\rightarrow$ soil
D) Root hair $\rightarrow$ soil $\rightarrow$ cortex
E) Cortex $\rightarrow$ soil $\rightarrow$ root hair