The constraints of a problem are listed below. What are the vertices of the feasible region?

2x+3y≤6
2x-6y≥-3
x≥0
y≥0

which of this are the answers
(0, 0), (0, 0.5), (0, 2), (3, 0)
(0, 0), (0, 2), (1.5, 1), (3, 0)
(0, 0), (0, 0.5), (1.5, 1), (3, 0)
(0, 0), (0, 0.5), (1, 1.5), (3, 0)