Given a mathematical program with objective function, Max Z = x2 + y2, and one constraint, x2 + y2 = 0). Which of the following

Given a mathematical program with objective function, Max Z = x2 + y2, and one constraint, x2 + y2 <= 1, along with nonnegativity constraints on the two decision variables (x, y >= 0). Which of the following are true?

a. There are multiple optimal solutions for this problem.

b. This feasible region is defined by nonlinear

c. The objective function is a linear function.

d. None of the answers are correct.