A.12%~15% 30%~40% 40%~50%
B.10%~15% 25%~30% 50%~60%
C.10%~15% 25%~35% 45%~55%
D.10%~15% 30%~40% 40%~50%
E.15%~25% 25%~35% 45%~55%