Critical Reasoning (CR) | Re: Over the last century, paleontologists have used small

Premise : paleontologists made 16 classification while opponents said that it should be classified in 11 species.

Conclusion : classification is unjustified.
Which of the following, if true, would enable the conclusion of the argument to be properly drawn?

(A) Not every species that lived in a given area is preserved as a fossil. ---- means there were more then 11 species, now problem is bigger.
(B) At least one individual of every true species of triceratops has been discovered as a fossil
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