Which polynomial does this sum of tiles represent?
A3x2 + 2x + 3
B3x2 + x + 4
Cx2 + 2x + 4
D6x2 + x + 1
A3x2 + 2x + 3
B3x2 + x + 4
Cx2 + 2x + 4
D6x2 + x + 1