Let \( P(x)=a_{0}+a_{1} x+\ldots+a_{n} x^{n}, a_{n} \neq 0 \) be su...
Let \( P(x)=a_{0}+a_{1} x+\ldots+a_{n} x^{n}, a_{n} \neq 0 \) be such that \( P\left(x^{2}\right)=P(x)^{2} \), then
(a) \( a_{0}=1 \)
(b) \( a_{0}=a_{1}=\ldots=a_{n-1}=0 \)
(c) \( a_{n}=1 \)
(d) \( a_{n}=-1 \)
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