Determine the domain and range of the following parabola. f(x)=-3x²-12x-17
A. Domain is all real numbers. Range is f(x)≤ -2
B. Domain is all real numbers. Range is f(x)≤ -5
C. Domain is all real numbers. Range is f(x)≥ -2
D. Domain is all real numbers. Range is f(x)≥ -