Which of the following is/are) correct:
(A). All functions in LPP are linear.
(B). The set of all optimal solutions of LPP need not to be convex.
(C). Every point lying on the line segment joining two optimal solutions to a LPP is also optimal solution.
(D). The optimal solutions of an LPP always exist.
Choose the correct answer from the options given below:
1
(A), (B) and (D) only.
2
(A), (B) and (C) only.
3
(A), (B), (C) and (D).
4
(B), (C) and (D) only.