A.17.5±0.5 B.17.5±1.0 C.17.5±2.0 D.17.5±2.5
A.20±1,>90 B.20±1,≥90 C.20±2,≥90 D.20±2,>90
A.20±2,>50 B.20±1,>50 C.20±2,≥50 D.20±1,≥50