A.120-130 B.140-150 C.165-175 D.180-185
A.1.94mm B.1.72mm C.1.96mm D.2.06mm
A.0.93 B.1.16 C.1.40
A.K1>K2 B.K2>K1 C.K1=K2 D.K1≠K2