If the sides of a triangle be along the lines $a_{1}x+b_{1}y+c_1=0, a_{2}x+b_{2}y+c_2=0$ and $a_{3}x+b_{3}y+c_3=0$ where
$a_i, b_i, c_i\in Q,$ then which of the following point(s) for given triangle must have necessarily rational coordinates?

A ray of light coming from the point $(2,2\sqrt{3})$ is incident at an angle $30°$ on the line $x=1$ at the point $A$. The ray gets reflected on the line $x=1$ and meets $x$ -axis at the point $B$. Then, the line $AB$ passes through the point
 

For $a>b>c>0$, the distance between $(1,1)$ and the point of intersection of the lines $ax+by+c=0$ and $bx+ay+c=0$ is less than $2\sqrt{2}$. Then