I$)$ Assume AQR wants to buy the equivalent of $1\%$ of the typical daily trading volume of TSLA stock. If the current price of TSLA is $$1,000$ per share, the daily volatility of TSLA shares is $2\%,$ and the trade execution parameter $k$ of AQR is $0\mathrm{.}5,$ then the estimate of the average purchase price using the Square Root Law $($and ignoring TSLA's bid$-$ask spread$)$ is $$1,001\mathrm{.}00.$

II$)$ There is a trade$-$off between Execution Cost and Execution Risk. Aggressive$/$Impatient trading has high execution risk but low execution cost. Patient$/$Non$-$aggressive trading has low execution risk but high execution cost.

a$.$ All statements are true.

b$.$I is true, II is false.

c$.$ II is true, I is false.

d$.$ All statements are false.