Just need the accurate answer or option. no need to explain sir.

Chomsky Normal Form (4 points) 4.0 points possible (graded, results hidden) Consider the following grammar S Aa A abc BAA SB BABE Answer the following questions based on the grammar above. 1. Which of the following variables are nullable? A B S 2. After removing the nullable/epsilon productions, which of the following grammars can be derived? S Aala A abc BAAS B BA AA - Ab S Aaa A abc BAAS BAA - Ab S - Aala A abc BAAS B BA AA A] None of the above 3. After removing the epsilon productions and then the unit productions, which one of the following grammars can be derived? O S + Aala - abc BAA Aab | -> abc BAA Aa b LO S Aala - abc BAAb - abc BAA Aa b S + Aala A abc|BAAA BA AA - abc BAA Aa b BAAA None of the above 4. Which of the following productions are already in CNF? (The capital and small letters are non-terminals and terminals respectively) S + AB Sb X BB 1x ba