The correct answer is >
C has to be larger than 0 if a is supposed to be larger than b.
An example would be
1 + 2 = 3
1 = b
2 = c
3 = a
1 + 0 = 1
1 = b
0 = c
1 = a
a = b
Thanks to this you see that the number has to be larger than 0 if A is to be larger than B.