publicclassSyncTest{privateintx;privateinty;privatesynchronizedvoidsetX(inti){x=i;}privatesynchronizedvoidsetY(inti){y=i;}publicvoidsetXY(inti){setX(i);setY(i);}publicsynchronizedbooleancheck(){returnx!=y;}}Underwhichconditionwillcheckreturntruewhencalledfromadifferentclass?() A. checkcannev...