Roth $401($k$)$ plans differ from $401($k$)$ plans in which two ways? $($Roth $401($k$)$ Plans$)$

Question $33$ options:

Employee contributions are not taxed at the individual's tax rate, upon retirement employee withdrawals are not taxed

Employee contributions are taxed at the individual's tax rate, upon retirement employee withdrawals are not taxed

Employee contributions are not taxed at the individual's tax rate, upon retirement employee withdrawals are taxed

Employee contributions are not taxed at the individual's tax rate, upon retirement employee withdrawals are taxed