The points $(-1,1), (5,7)$ and $(8,10)$ ______

Question

$\begin{array}{1 1}(A) \;are\;collinear \\(B)\;form\;an\;isosceles\;triangle \\(C)\;form\;a\;equilateral\;triangle \\(D)\; form \;a \; right\;angle\;triangle \end{array}$