For two infinitely long charged parallel sheets, the electric field at $P$ will be
  • A$\frac{\sigma}{2 x}-\frac{\sigma}{2(r-x)}$
  • B$\frac{\sigma}{2 \varepsilon_0 x}+\frac{\sigma}{2 \pi(r-x) \varepsilon_0}$
  • C$\frac{\sigma}{\varepsilon_0}$
  • D$0$
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