Consider the following EER model

fig$2\_6\_8.$png

Which statement is correct?

Group of answer choices

All $4$ cardinalities can be perfectly mapped to the relational model.

The relational model cannot enforce that an employee supervises at least one other employee.

The relational model cannot enforce that an employee can be supervised by at most one other employee.

The relational model cannot enforce that an employee can supervise N other employees.