(B).

		RHAMM
Tumor grade		0	1	2	3
	Total					P value
0	1 (3.8)	1 (14.3)	0 (0.0)	0 (0.0)	0 (0.0)	0.001
0–1	2 (7.7)	0 (0.0)	2 (20.0)	0 (0.0)	0 (0.0)
1	8 (30.8)	5 (71.4)	2 (20.0)	1 (25.0)	0 (0.0)
2	8 (30.8)	1 (14.3)	5 (50.0)	1 (25.0)	1 (20.0)
3	7 (26.9)	0 (0.0)	1 (10.0)	2 (50.0)	4 (80.0)