In Lake Victoria of East Africa, more than $Y$ species of $X$ fish became extinct together. Identify $X$ and $Y$.
- A$X = \text{Nile Perch}, Y = 100$
- B$X = \text{Cichlid}, Y = 200$
- C$X = \text{Clarias gariepinus}, Y = 100$
- D$X = \text{Lamprey}, Y = 2000$
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