ACCorDing to thE ArtiClE, why ArE quEstions ABout A CAnDiDAtE's pAst BEhAviour usEFul
A．thEy provE thE CAnDiDAtE will ACt AppropriAtEly in DiFFErEnt
B．thEy show thE CAnDiDAtE CAn rEmEmBEr DEtAils oF thE situAtion.
C．thEy DEmonstrAtE how thE CAnDiDAtE might ACt in thE Futur