A.24+6+2+1-3-0.5-1-3=25.5(万元)
B.24+6+2+1+3+0.5+l+3=40.5(万元)
C.24-6-2-1+3+0.5+1+3=2.5(万元)
D.24-6-2-1-3-0.5-1-3=7.5(万元)