Consider the following grammar:

A → BA\'
A\'→ +BA\' /ϵ 
B → TB\'
B\'→ -TB\'/ ϵ
T → id / (A) 

What will be the follow of T and A\’
(A) +, ϵ, $ and $
(B) -, +, $, ) and $, )
(C) id, +, ) and id , (
(D) -, +, id, ) and $, )


Answer: (B)

Explanation: First(X) contains all terminal present in first place of every string derived by X.
Follow of X contains set of all terminal present in the place immediately right X.

Therefore,

Follow of A Fo(A) = $, ) 
Follow of A\' Fo(A\') = Fo(A) = $ , )
Follow of B Fo(B) = +, $, )
Follow of B\' Fo(B\') = Fo(B) = +, $, )

And, Follow of T Fo(T) 
= -, Fo(B\') 
= -, +, $, ) 

So, option (B) is correct.

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