The correct option is A I→a, II→b, III→a
Comparing with standard quadratic equation y = ax2 + bx + c, we get a=1, b=−8, c =0.
Since the leading coefficient a =1 > 0, hence the graph will open upwards.
Comparing with standard quadratic equation y = ax2 + bx + c, we get a=−2, b=0, c =3.
Since the leading coefficient a = −2 < 0, hence the graph will open downwards.
Comparing with standard quadratic equation y = ax2 + bx + c, we get a=1, b=−6, c = 4
Since the leading coefficient a =1 > 0, hence the graph will open upward.