AlExAnDEr, BEing oF A ______ , rEsErvED nAturE, pAys ClosE AttEntion to whAt pEoplE sAy ABout him AnD DoEs not likE mAking spEEChEs in puBliC.
A．sEnsiBlE
B．sEnsitivE
C．sEnsAtionAl
D．sAnE