PLZ HELP?!?! I WANNA CHECK MY ANSWERS ONLY PLS HELP CHECK IF THEY ARE CORRECT?!

In △ABC, the coordinates of vertices A and B are A(1,2) and B(−3,−1). For each of the given coordinates of vertex C, is △ABC a right triangle?
Select Right Triangle or Not a Right Triangle for each set of coordinates.

Right Triangle Not a Right Triangle. These are the c vertices and I think that two of them are right triangles.

C(−3,−2) not

C(0,−5) right triangle

C(1,−2) right triangle