5・13. As shown in the table, the relationship between $x$ and $y$ is
(A) $y=4 x-1$.
(B) $y=x^{3}-x^{2}+x+2$.
(C) $y=x^{2}+x+1$.
(D) $y=\left(x^{2}+x+1\right)(x-1)$.
(E) None of the above.
(3rd American High School Mathematics Examination, 1952)