Which expression is the result of adding $$\frac{y}{y-4} + \frac{3}{y+1}$$?

$\frac{y^2 + 4y - 12}{(y-4)(y+1)}$

$\frac{y^2 - 2y + 12}{(y-4)(y+1)}$

Adding and Subtracting Rational Expressions Practice — Grade 10 math