The points $(-3,0) , (1,-3) $ and $ (4,1) 4 are the vertices of an isosceles right angled triangle . Then the area of this triangle is ______ sq. units

Question

$\begin{array}{1 1}(A) \;125\;sq.units \\(B)\;12.5\;sq.units \\(C)\;1.25\;sq.units\\(D)\;1250\;sq.units \end{array}$