Jck ws soon told the fct______he did ws not necessry.whyB．tht whtC．howD．whtJck ws soon told the fct______he did ws not necessry.why B．tht wht C．how D．wht

A.M=162．4kN·m；Nmax=480kN；V=42．7kN
B.M=162．4kN·m；Nmax=400kN；V=46．9kN
C.M=196．0kN·m；Nmax=480kN；V=46．9kN
D.M=139．2kN·m；Nmax=400kN；V=36．6kN