Which of the following is the basic pathogenesis of acute appendicitis?（ ）

A、Innerstagnantofdregs,disorderofQiactivityandQimovementdisorder
B、intestinalobstruction,stasisofheatandblood,andimpairedcirculation
C、watertightanalmuscles
D、stomachheat,liverstagnation,andfiretoxincondensation