Determine any horizontal or slant asymptotes of the rational function: f(x) = (3x ^ 2 - x)/(2x ^ 2 - 1)
A) f(x) has a horizontal asymptote at y = 3/2
B) f(x) has a horizontal asymptote at y = 0
C) f(x) has a slant asymptote at y = x + 3/2
D) f(x) has a slant asymptote at y = 3/2