If the partial derivation tree contains the root as the starting variable, the form is known as:(a) Chomsky hierarchy(b) Sentential form(c) Root form(d) None of the mentionedThe question was posed to me in a national level competition.My doubt is from DPDA and Context Free Languages topic in division Push Down Automata of Automata Theory

If the partial derivation tree contains the root as the starting varia

1.	If the partial derivation tree contains the root as the starting variable, the form is known as:(a) Chomsky hierarchy(b) Sentential form(c) Root form(d) None of the mentionedThe question was posed to me in a national level competition.My doubt is from DPDA and Context Free Languages topic in division Push Down Automata of Automata Theory
Answer» The CORRECT option is (b) Sentential form For explanation: Example: For any grammar, productions be: S->AB A->AAA\| ^ B->Bb\| ^ The partial derivation TREE can be drawn as: SINCE it has the root as S, this can be said to be in sentential form.

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