Four students were asked to factor the same polynomial expression. Taylor got 3x³+3x²+x+1=x(3x²+x+1). Lindsay got 3x³+3x²+x+1=(x+1)(3x²+1). Max got 3x³+3x²+x+1=(x+3)(3x²-1). Valerie got 3x³+3x²+x+1=3x²(x+1). Which student correctly factored the polynomial? a. Taylor b. Lindsay c. Max d. Valerie