What is (intersection '(r a t) '(f i n k))

  • A: (R A T)
  • B: (F I N K)
  • C: (R A T F I N K)
  • D: null
  • E: false

    Answer: D

    These two sets have nothing in common, so the intersection is the empty set, which is represented as null. (false would be a type error, since false is boolean .)

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