Question

Can someone help me out with this?
Given the function f(x)=x^4+3x^3-2x^2-6x-1, use the Intermediate Value Theorem to decide which of the following intervals contains at least one zero. Select all 4 that apply.
a. [-4,-3]
b. [-3,-2]
c. [-2,-1]
d. [-1,0]
e.[0,1]
f.[1,2]