Which of the following is LL(1) grammar?

Question

A) $S\rightarrow aA\mid bBa$

    $A\rightarrow bA\mid a$

    $ B\rightarrow aB\mid \varepsilon$

B) $S\rightarrow Aa\mid Bb$

    $ A\rightarrow \varepsilon $

    $ B\rightarrow \varepsilon $

C) $E\rightarrow E+E\mid (E) \mid id$

Answer 1

ans is only B

Comments

could you explain how you got the answer?

---

for better understanding refer here: LR Parsing Part 2