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Which of the following is incorrect statement about Building Work of MP tree?

Which of the following is incorrect statement about Building Work of MP tree? Correct Answer Constant sites have the same state in all taxa and are quite useful in evaluating the various topologies

Constant sites have the same state in all taxa and are obviously useless in evaluating the various topologies. The sites that have changes occurring only once are not very useful either for constructing parsimony trees because they can be explained by multiple tree topologies. The non-informative sites are thus discarded in parsimony tree construction.

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