The objective function `Z=6x +2y ` is subject to
`5x + 9y le 90, x + y ge 4, y le 8, x, y ge 0`.
The minimum value of Z occurs at

Options

A. (a) `(0,2)`
B. (b) `(0,4)`
C. (c) `(4,0)`
D. (d) `(18,0) `

Answer

B