4. Niech W(x) = ax² + 2x²-x+a, gdzie x € R. A. Jeśli a 0, to lim W(x) lim W(x)

B. Jeśli a 0, to lim W(x)=- lim W(x)

C. Jeśli a 0, to lim W(x)= lim W(x)=-0.

D. Jeśli a = 0, to lim W(x)=- i lim W(x)=+00.