Which one of these "assets" is tangent to the efficient frontier? $($Ultimate$-$MPT$)$

No calculations necessary.

Sharpe: $1\mathrm{.}3.$ Omega $8\mathrm{.}1.$

Sharpe: $2.$ Omega $4.$

Sharpe: $2\mathrm{.}2.$ Omega $5.$

Sharpe: $1\mathrm{.}9.$ Omega $8.$