A.1/48λb*b*b B.1/36λb*b*b C.1/8λb*b*b D.1/12λb*b*b
A.2.78 B.3.12 C.3.55 D.5.96
A.2.48;4.15 B.2.48;5.70 C.2.00;4.53 D.1.85;4.21