If set A and B are defined as:$A=\left\{(x,y):y=\frac{1}{x},x\ne 0,x\in R\right\}$$B=\left\{\right(x,y):y=-x,x\in R\},\text{ then }$

• A

  $A\cap B=A$

• B

  $A\cap B=B$

• C

  $A\cap B=\varphi$

• D

  None of these