The first value is in the positive x- direction, that is 5 units to the right from the origin and the second value is in the positive y- direction, that is 2 units up.
So 5 units right on the x- axis and 2 units up on the y- axis from the origin.
We know N cannot be 0 as the value would not be negative. We know N cannot be negative as that would make the expression positive. B is the only answer that works.
