From the fact book: the occurrence of haplotype r' (Ce) is 2% in all population groups listed (Caucasian, Black, Native Americans, Asians) haplotype r" (cE) is 1% Caucasian, 0% Black, 6% Native American,0% Asian and ry (CE) is essentially 0% in all populations, of course that includes D+ populations.
r'r' and r"r" are rare across all populations. r'r is 0.8% occurrence for Caucasian, rare for Black, 0.1% for Asian. r"r is 0.9% occurrence for Caucasian, rare for Black, rare for Asian.