[General] Company/-ies, Companies

[Bobette]

Which of the following atlernatives are correct in the following sentence to refer to either one or several companies:

To be able to access XXX and enter tariff details, employees of parcel delivery service companies need to receive an appropriate 'XXXX' role in the related company/-ies.

- company(-ies)
- company/-ies
- company/companies
- companies
- (other?)

Thank you.

 

[Rover_KE]

companies