The length of both sides is obtained by subtracting one coordinate from another sharing a similar coordinate.
(-2,10) - (5,10) = (-7,0)
These points are 7 units apart.
Let's compare the other length.
(5,10) - (5,1) = ( 0, -9)
These points are 9 units apart.
Therefore, the length is longer than the breadth by 9 - 7 = 2 units
Option B