A simple table for a linear programming problem is given below:
|
|
5
|
2
|
3
|
0
|
0
|
0
|
|
|
|
x1
|
x2
|
x3
|
x4
|
x5
|
x6
|
B0
|
|
x4
|
1
|
2
|
2
|
1
|
0
|
0
|
8
|
|
x5
|
3
|
4
|
1
|
0
|
1
|
0
|
7
|
|
x6
|
2
|
3
|
4
|
0
|
0
|
1
|
10
|
Which one of the following correctly indicates the combination of entering and leaving variable
(a) x1 and x4 (b) x2 and x6
(c) x1 and x5 (d) x3 and x4