A、BECAusE hE hAs somE knowlEDgE oF thE lAw.
B、BECAusE hE onCE hAD thE sAmE proBlEm.
C．BECAusE hE is A FriEnD oF thE ownEr.
D．BECAusE hE CAn Bring A lAwsuit AgAinst thE ownEr.