Question: Mark all that apply by writing either T ( for true ) or F ( for false ) in the blank box before each statement.

Mark all that apply by writing either T(for true) or F(for false) in the blank box before each
statement. Let A,B,C, and D denote nonterminals, and let a,b,c, and d denote terminals.
Which of the following grammars describe the language {alblcmdnbn|l,m,ninN}? NB:
the grammar root is always S, and zero is a natural number (0inN).
S::=A,A::=bA|B,B::=dB|C,C::=CcA|D,D::=aD|.
S::=A,A::=aA|B,B::=bDd|C,C::=Cc|,D::=bBd|C.
S::=AC,A::=aAb|,B::=bBd|,C::=cC|B.
S::=AC,A::=Ac|B,B::=aBb|,C::=bCd|.
S::=ABC,A::=aAb|,B::=cB|,C::=bCd|.
S::=ABC,A::=Ac|,B::=bBd|C,C::=cC|.
 Mark all that apply by writing either T(for true) or F(for

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