Universal containers uses a custom object within the product development team. product development, executives, and system administrators should be the only users with access to records of this object. product development needs read/write access to all the records within the object, while the executives should only be able to view the records.

how can the system administrator configure the security model to meet these requirements?

a. set the organization-wide defaults for the custom object to public read write; create a read only sharing rule to share all records in the object with the executive public group.
b. set the organization-wide defaults for the custom object to public read write; give the product development profile read, create, edit permissions; give the executive profile read only permissions for that object.
c. set the organization-wide defaults for the custom object to private; add the executive users to the default team for the object; add the default team to all the records.
d. set the organization-wide defaults for the custom object to private; give the product development profile modify all for the object; give the executive profile view all access.