Simplify \(\frac{x^2 + y^2 + xy}{x + y}\) - \(\frac{x^2 + y^2}{x - y}\)

• A.\(\frac{x^2 + y^2} {(x - y)^2}\)
• B.\(\frac{2y^3} {y^2 - x^2}\)
• C.\(\frac{3x^2 + y^2} {(2x - y)^2}\)
• D.\(\frac{x^2 + y^2} {(x^2 - y)}\)
• E.