If the sets $A$ and $B$ are defined as $A = \{ (x,\,y):y = {e^x},\,x \in R\} $; $B = \{ (x,\,y):y = x,\,x \in R\} ,$ then

  • A

    $B \subseteq A$

  • B

    $A \subseteq B$

  • C

    $A \cap B = \phi $

  • D

    $A \cup B = A$

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