A solution (x,y)(x, y)(x,y) to 3x+4y=123x + 4y = 123x+4y=12 is called primitive if gcd(x,y)=1\gcd(x, y) = 1gcd(x,y)=1. Which is a primitive solution?
(0,3)(0, 3)(0,3)
(4,0)(4, 0)(4,0)
(8,−3)(8, -3)(8,−3)
(12,−6)(12, -6)(12,−6)