Select the coordinates A′ and B′ after dilation of the line segment AB with a scale factor of 2, centered at the origin where the endpoints are A(3,7) and B(4,9) .

A′(−6,3) and B′(8,18)
A′(6,14) and B′(−4,3)
A′(6,14) and B′(8,18)
′(3/2,7/2) and B′(2,9/2)