For which of these functions f(x) does limit as x approaches negative infinity f(x)=2

Question

A. (x-2)/(3x-5)
B. 2x/sqrt(x-2)
C. (2x^2-6x+1)/(1+x^2)
D. (2x-1)/(x^2+1)
E. None of these

Answer 1

as x gets large, the c reduces to

2x^2-6x+1/x^2 which reduces to
2+0+0