Use the graph to answer the question. What is the solution of x4 – 3x3 + x2 + 3x – 2 < 0?
A (−1, 2)
B [−1, 2]
C (−1, 1) ∪ (1, 2)
D (−1, 1] ∪ [1, 2)

Answer is C
On edge 2020