7 items only, choose the correct answer. (brief solution is more appreciated)

1. Which of the following statements is/are correct?*

1. It is possible to have more than one corner point of the feasible set as an optimum solution to an LP problem. ii. The objective function parallel to the line 4x + 2y = 200 is 2x+y.i. Linear Programming (LP) always involves either maximizing or minimizing an objective function. ji. Without exception, all of the functions in graphical LP are either straight lines or families of straight lines