线性规划模型min z=8x1+6x2,约束条件3x1+4x2>=3, 6x1+3x2>=4, x1,x2>=0则其对偶问题模型为()
A.
max f=3y1+4y2 ,约束条件为 3y1+6y2<=8, 4y1+3y2<=6, y1,y2>=0
B.
max f=3y1+4y2 ,约束条件为 3y1+6y2>=8, 4y1+3y2>=6, y1,y2>=0
C.
min f=3y1+4y2 ,约束条件为 3y1+6y2<=8, 4y1+3y2<=6, y1,y2>=0
D.
min f=3y1+4y2 ,约束条件为 3y1+6y2>=8, 4y1+3y2>=6, y1,y2>=0