Consider the LPP : z = 60x + 15y subject to constraints $x+y ≤ 50; 3x + y ≤ 90; x, y ≥ 0$ which of the following is true :

(A) Maximum value is 1800

(B) Smallest value occurs at (0, 0)

(C) The feasible region has three corner points

(D) The minimum value occurs at (20, 30)

(E) The corner point of the feasible region that lies on the y-axis is (0, 30)

Choose the correct answer from the options given below :

(A), (B) Only