Which XXX completes the Python selection$\_$sort$()$ function?

$$def selection$\_$sort$($numbers$)$: for i in range$($len$($numbers$)-1)$: # Find index of smallest remaining element index$\_$smallest $=$ i for j in range$($i$+1,$ len$($numbers$))$: XXX: index$\_$smallest $=$ j # Swap numbers$[$i$]$ and numbers$[$index$\_$smallest$]$ temp $=$ numbers$[$i$]$ numbers$[$i$]=$ numbers$[$index$\_$smallest$]$ numbers$[$index$\_$smallest$]=$ temp

a$)$ if numbers$[$i$]<$ numbers$[$j$]$

b$)$ if numbers$[$j$]<$ numbers$[$index$\_$smallest$]$

c$)$ if j $<$ index$\_$smallest

d$)$ if numbers$[$index$\_$smallest$]<$ numbers$[$i$]$