Discussion
If FIRST of a right side contains epsilon, the FOLLOW computation must also
Answer: D
Correct answer: add FOLLOW of the left side nonterminal to the FOLLOW of that symbol
If everything after a symbol in a right side can vanish, then whatever may follow the left side may follow that symbol too. This propagation rule is what makes FOLLOW computation iterative, since adding to one FOLLOW set may require additions to others until nothing changes.
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