Answer given is B

But why can’t we select D as an answer? If R is present anywhere in the system, couldn’t it be on the x-axis too? If that’s the case it would have co-ordinates (5,0) and the distance (OR) would be 5 (Option D)

In any other case x co-ordinate would be less than 5.

So by equal not equal strategy it would be option D.

I feel I’m either missing something obvious or we can’t move the point elsewhere.