A company has four suppliers S1, S2, S3 and 54. The capacity of these suppliers is: 10, 15, 10, and 8, respectively. The company has four factories F1, F2, F3, and F4. The demand of these factories is 8, 5, 20 and 10, respectively.The transportation cost is given in the below table: 57 71 1 10 11 50 19 16 54 11 10 6 NN 3 12 5 12 4 4 8 ! 2 poi The optimal transportation cost is * $272 $257 O $227 O $275 None of the above. The 2nd leaving variable is * 2 points X44 X12 None of the above. The 2nd closed loop consists 2 points of 13, X12, X22, X21 43, X44, X24, X23 X13, X12, X22, X23 43, X44, X24, X21 O None of the above. . The value of 02 is * 2 point 4 6 O O O O O O None of the above