In context to CFGs if we remove the Nullable variables, eliminate the unit productions, and eliminate products which yield no terminals then we are: O Removing useless symbols O All of these are correct O Simplifying the CFG O Performing a Reduction

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In context to CFGs if we remove the Nullable variables, eliminate the unit productions, and eliminate products which yield no terminals then we are simplifying the CFG.

CFG stands for Context-Free Grammar which is a formal grammar that defines the syntax or structure of a language. It is also known as Type 2 Grammar of Chomsky's Hierarchy. The CFG is a set of production rules that describe the set of all possible strings in a language. The production rules contain the non-terminal symbols and terminal symbols, and it describes how the non-terminal symbols can be replaced by terminal symbols. The CFG helps in describing the structure of programming languages, compilers, and natural languages. If we remove the Nullable variables, eliminate the unit productions, and eliminate products that yield no terminals, then we are simplifying the CFG. These are the methods used for simplifying the CFG by removing unwanted symbols and making the grammar more concise. Removing the Nullable variables means the variables that can produce empty or Null strings can be removed from the production rules. Eliminating the unit productions means the rules that contain only one non-terminal symbol can be removed. Eliminating the products that yield no terminals means the rules that do not generate any terminal symbols can be removed. So, these are the methods used for simplifying the CFG.

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