If the sets A and B are defined as \[ \begin{array}{l} A=\left\{(x, y) ; y=\frac{1}{x} \cdot 0 \....

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If the sets A and B are defined as
\( \mathrm{P} \)
\[
\begin{array}{l}
A=\left\{(x, y) ; y=\frac{1}{x} \cdot 0 \neq x \in \mathbb{k}\right\} \\
B=\left\{(x, y) ; y=-\frac{1}{x} \cdot 0 \neq x \in R\right\}
\end{array}
\]

Then number of common elements in A and B equal to
(A) 1
(B) 0
(C) 2
(D) 3


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