Which of the following is not the reason that made Lady Catherine blame Lizzy?

A、LizzyandMrDarcylovedeachothersomuch.;
B、LizzymighthavemadeMrDarcyforgethisfamilyresponsibility.;
C、Lizzy'sfamilyfailedtomatchMrDarcy's.;
D、MrDarcywasengagedwithherdaughter.