Anne1 is clear on the subject:
Class C. IFR and VFR flights are permitted, all flights are provided with air traffic control service and IFR flights are
separated from other IFR flights and from VFR flights. VFR flights are separated from IFR flights and receive traffic
information in respect of other VFR flights.
Class D. IFR and VFR flights are permitted and all flights are provided with air traffic control service, IFR flights are
separated from other IFR flights and receive traffic information in respect of VFR flights, VFR flights receive traffic
information in respect of all other flights.