Which of the following is a horizontal asymptote of f(x)=2x2−3x2+1f(x) = \frac{2x^2 - 3}{x^2 + 1}f(x)=x2+12x2−3?
y=2y = 2y=2
y=−3y = -3y=−3
y=0y = 0y=0
x=2x = 2x=2