What are the tradeoffs in using a dark$$ pool?

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Part $1$

$($Select the best answer$$ below.$)$

A$.$

Using a dark pool allows traders to not reveal their$$ intentions, since limit order books are not visible.$$ Additionally, using a dark pool allows traders to potentially trade at a better price.$$ However, dark pools sacrifice the guarantee of immediacy since an order may not be filled.

B$.$

Using a dark pool allows traders to not reveal their$$ intentions, since limit order books are not visible.$$ Additionally, using a dark pool allows t