(b) Which of the sets are equivalent? O A C; DE F OAC D; E-F O AC; B D E F OAB; CD; EF OA C B D E F (c) Which of the given sets are equal? OA=C; B=D=E=F OA=C=D; E = F OA=C; D-E-F OA C D E=F OC=E=F