Which rule yields the dilation of the figure KLMN centered at the origin

ANSWER
B. [tex](x,y)\to (0.5x,0.5y)[/tex]
EXPLANATION
From the diagram, MN=6 units.
and M'N'=3 units.
The quadrilateral KLMN was dilated to obtain K'L'M'N'
We can observe that,
[tex] |M'N'| = 0.5|MN| [/tex]
This means that the scale factor of the dilation is 0.5.
The mapping for the dilation is :
[tex](x,y)\to (0.5x,0.5y)[/tex]
The correct answer is B.