Syntax Analysis21

0. Consider the grammar given below:
S → Aa
A → BD
B → b|ε
D → d|ε
Let a, b, d, and $ be indexed a follows:
a b d $
3 2 1 0
Compute the FOLLOW set of the non-terminal B and write the index values for the symbols in the FOLLOW set in the descending order. (For example, if the FOLLOW set is {a, b, d, $), then the answer should be 3210)

Answer
Comment
Array

Option : A
Explanation :
S → Aa
A → BD
B → b|ε
D → d|ε
Follow (B) = {d, a}
Hence index value in descending order is 31.

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