A quadratic equation one of whose roots is $\sqrt 5$ and the product of whose roots is $-2\sqrt 5$ is ________

Question

$(A) \;x^2+(2-\sqrt 5)x-2\sqrt 5=0\\(B)\;x^2-(2-\sqrt 5)x+2\sqrt 5=0\\(C)\;x^2-(2-\sqrt 5)x-2\sqrt 5=0\\(D)\;x^2+(2-\sqrt 5)x+2\sqrt 5=0$