I$)$ The price at which trades are executed in a dark pool is the market$-$clearing price determined by the intersection of demand and supply curves associated with the orders routed to that particular dark pool.

II$)$ The purpose of using GARCH models and Factor models to estimate the variance covariance matrix of stock returns is to have forward looking volatilities and correlations respectively.

All statements are true.

I is true, II is false.

II is true, I is false.

All statements are false.