Minimize $c = 4 x + 7 y$ Subject To $\begin{array} { l } 8 x + 3 y \geq 30 \\2 x + 3 y \geq 12 \\x \geq 0 , y \geq 0\end{array}$

Multiple Choice

Minimize $c = 4 x + 7 y$
Subject to
$\begin{array} { l } 8 x + 3 y \geq 30 \\2 x + 3 y \geq 12 \\x \geq 0 , y \geq 0\end{array}$

A) $c = 24$ , $x = 6$ , $y = 0$
B) $c = 21$ , $x = 0$ , $y = 3$
C) $c = 6$ , $x = 3$ , $y = 0$
D) $c = 42$ , $x = 0$ , $y = 6$
E) no solution