When an employee has a Roth $401($k$)$ with an employer match, how are the employer's matching funds applied?

Multiple choice question.

The matching funds must be put in a traditional $401($k$)$ for the employee because employers can NOT make contributions to a Roth $401($k$).$

The employee can elect to pay income tax on the amount of the employer's contribution, so that the matching funds can be applied in the Roth $401($k$).$

The employer is able to invest the matching funds directly into the employees' chosen investments for their Roth $401($k$)\text{'}$s$.$

The employee will lose the matching funds if a Roth $401($k$)$ is chosen because the employer is NOT allowed to invest in that type of account.