A.(2.1±2.0)×108 B.(2.1±2.0)×109 C.(2.1±2.0)×107 D.(2.1±2.0)×106 E.(2.1±2.0)×105
A.10%~20% B.15%~25% C.20%~25% D.25%~30% E.30%~50%
A.0.3% B.0.4% C.0.5% D.0.6% E.0.7%