Right triangle PQR is to be constructed in the xy-plane so that the right angle is at P
and line PR is parallel to the x-axis. The x and y coordinates of P, Q and R are to be
integers that satisfy the inequalities :– $-4\leq x \leq 5$ and $6\leq y \leq 16$ . How many different triangles could be
constructed with these properties ?
(a) 110 (b) 1,100 (c) 9,900 (d) 10,000