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Assertion (A): Every S-attributed definition is also L-attributed.
Reason (R): The L condition constrains only inherited attributes, of which an S-attributed definition has none.

  • A.A is false but R is true
  • B.Both A and R are true, and R is the correct explanation of A
  • C.Both A and R are true, but R is not the correct explanation of A
  • D.A is true but R is false

Answer: B

Both are true and the reason gives the mechanism, and the containment is strict. An L-attributed definition passing a declared type down a list of identifiers uses an inherited attribute and so lies outside the S-attributed class.

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