The function P(x)=2x^2+3x+4, is reflected and dilated by the function I(x)=−3P(x).

Which function rule represents I(x)?

I(x)=−6x^2+3x+4
I(x)=−6x^2−9x−12
I(x)=−18x^2−9x+4
I(x)=−18x^2+3x+4