If objective function for LPP is\( z=5x+7y \)and corner points of feasible region are\( (0, 0) (7, 0) (3, 4)\) and\( (0, 2) \)then maximum value of \( z \) occurs at :
\((A) (0,0)\)
\((B) (7,0)\)
\((C) (3,4)\)
\((D) (0,2)\)
\((E) (4,3) \)
Choose the correct answer from the options given below: