A.3 B.6 C.12 D.15
A.1000~3000m2 B.3001~5000m2 C.5001~50000m2 D.50001~100000m2
A.30 B.40 C.50 D.60
A.13 B.14 C.16 D.30
A.5 B.6 C.7 D.8