Consider the grammar G:S aSb $|$ aaSb $|$ Mark the correct statements below regarding this grammar. Incorrect statements will reduce your grade.The string ab has two different derivation trees in this grammar. This is an ambiguous grammar. S $$ AB $|$ AC $|$ AD $|$ AE A $$ a B $$ b C $$ SB D $$ AC E $$ AB is an equivalent non$-$ambiguous grammar. The grammar S aSb $|$ aaSb $|$ab $|$ aab is an equivalent non$-$ambiguous grammar. The string aaabb has two different derivation trees in this grammar. This grammar is not ambiguous.