In the next B&B tree for a maximization problem with X1 and X2 are integer variables, one of the following statement is correct ( LfOZ 2-22 X = 3:2, X2=4.6 Xi>4 D 220 Xv=3 x2=4.3 LP2) Z=19 X=4 X2=4 X254 X275 LPM 7:17 LP3 2=18 x=2 R2-5 X =2.5 1 +2=4 A. The optimal objective value is 20 13 OB. Node LP4 must be fathomed . The optimal objective value is 22 O D. The optimal objective value is not found yet, because LP4 node needs to be branched and better solution might be found In the next B&B tree for a maximization problem with X1 and X2 are integer variables, one of the following statement is correct ( LfOZ 2-22 X = 3:2, X2=4.6 Xi>4 D 220 Xv=3 x2=4.3 LP2) Z=19 X=4 X2=4 X254 X275 LPM 7:17 LP3 2=18 x=2 R2-5 X =2.5 1 +2=4 A. The optimal objective value is 20 13 OB. Node LP4 must be fathomed . The optimal objective value is 22 O D. The optimal objective value is not found yet, because LP4 node needs to be branched and better solution might be found