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Follow ,LFollow and Rfollow
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For a CFG, Follow (A) is the set of all terminals that can immediately appear to the right of the non-terminal A in some sentential form. Consider two sets LFollow (A) and RFollow(A) by replacing the word sentential by “Left most sentential and right most sentential respectively” in the definition of Follow (A).
Choose the correct option

  All three are same.
  All three are different
  Follow (A) and LFollow (A) must be same.
  RFollow (A) and Follow (A) may be same
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