What is the safest order while simplifying Context Free Grammar?
- Elimination of $\varepsilon$-productions, Unit productions and then Useless symbols \& productions.
- Elimination of useless symbols \& productions, $\varepsilon$-productions and then Unit productions.
- Elimination of Unit productions, $\varepsilon$-productions and then Useless symbols and productions.
- Elimination of $\varepsilon$-productions, Useless symbols and productions and then Unit productions.
(Option $1[39629]) 1$
(Option $2[39630]) 2$
(Option $3[39631]) 3$
(Option $4 [39632]) 4$
Answer Given by Candidate: $2$