C-11-Q066mediumsingle_mcqIf A(−2,1)A(-2,1)A(−2,1), B(10,6)B(10,6)B(10,6), C(a,−6)C(a,-6)C(a,−6) and AB=BCAB = BCAB=BC, the possible values of aaa are —a5 onlyb15 onlyc5 or 15d0 or 5