Which two statements are true about record types? Choose two answers

Universal Containers wants to track installation information once it container has been purchased on a custom object. Sales reps should have visibility of all the installation with their opportunities.
visibility of all the installations associated with their opportunities.
What kind of relationship should this new object have to the Opportunity?

Universal Containers implemented an application process that uses custom objects Internships and Applications. The organization-wide default for Internships has been set to private and is the master in the master-detail relationship with Applications. The VP of HR wants to allow edit access to Applications to recruiters.
How should an app builder configure the proper access?