单项选择题

A.直径8.7mm,破头长度400mm,绳扣长度200mm,插接长度200mm
B.直径24~26mm,破头长度900mm,绳扣长度450mm,插接长度450mm
C.直径34.7~37mm,破头长度1100mm,绳扣长度550mm,插接长度850mm
D.直径34~40mm,破头长度l200mm,绳扣长度600mm,插接长度900mm