The T568B wiring standard slates that CAT5 cables should be coded as follows:

A.
White/Orange, Orange, White/Green, Green, Blue, White/Blue, White/Brown, Brown,

B.
White/Orange, Orange, White/Green, Blue, White/Blue, Green, White/Brown, Brown,

C.
White/Orange, Orange, \White/Green, Green, White/Blue, Blue, White/Brown, Brown,

D.
White/Orange, Orange, White/Green, Blue,