Let LaTeX: x = \text{-}\frac {11} 8x = - 11 8 and LaTeX: y = \text{-}\frac {11} 4y = - 11 4. Which expression has a negative value?

Group of answer choices

LaTeX: x + yx + y

LaTeX: x - yx − y

LaTeX: x \cdot yx ⋅ y

LaTeX: \frac x y