Give the Equation of the Oblique Asymptote, If Any, of the Function

Multiple Choice

Give the equation of the oblique asymptote, if any, of the function.
- $$f ( x ) = \frac { x ^ { 2 } + 2 x - 6 } { x - 4 }$$

A) no oblique asymptotes
B) $x = y + 6$
C) $y = x + 6$
D) $y = x - 2$