The correct option is
D None of these
The graph is shown in image
Graphical method--
it is clear from the given image that maxima of the curve at x=2
hence equation of axis of symmetry of quadratic equation is x=2
Other method--
because graph cut the X axis at two point x=1,x=3
hence equation of curve is y=−(x−1)(x−3)
y=−x2+4x−3 ..... equ(1)
now axis of symmetry of quadratic equation is x=−b2a
now comapre equ(1) with ax2+bx+x=0
a=−1,b=+4,c=−3
now equation of axis of symmetry isx=−42×−1
hence equation of axis of symmetry is x=2
![815745_587009_ans_af22f74a6b034bc49895bfec5f5937aa.jpg](https://search-static.byjusweb.com/question-images/toppr_ext/questions/815745_587009_ans_af22f74a6b034bc49895bfec5f5937aa.jpg)