In one of the codes for transfer of numbers the code for the succeeding number differs from that of the number only in the change of a single digit. The code is

In one of the codes for transfer of numbers the code for the succeedin

1.	In one of the codes for transfer of numbers the code for the succeeding number differs from that of the number only in the change of a single digit. The code is
A.	ASCII
B.	Excess 3 CODE
C.	Gray CODE
D.	none of these
Answer» D. none of these