A ball on the putting green may be cleaned when lifted under Rule 16-1b. Elsewhere, a ball may be cleaned when lifted, except when it has been lifted:
a. To determine if it is unfit for play (Rule 5-3);
b. For identification (Rule 12-2), in which case it may be cleaned only to the extent necessary for identification; or
c. Because it is assisting or interfering with play (Rule 22).