The answer is A !!!!!!!!
the two segments AD and AB are equal therefore if you make the two equal to each other you will get the answer:
x^2+2=11 then you subtract two to put x squared on the side by itself
then you have x^2=9
then all you have to do is take the square root of 9 and x^2 and you get x=3
thefore the answer is A
