The graph of $\ldots \ldots \ldots$ is a curve open upwards.
- A$p(x)=x^{2}+8 x+12$
- B$p(x)=12-4 x-x^{2}$
- C$p(x)=-x^{2}+x+2$
- D$p(x)=12-x^{2}+x$
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