What solution should the administrator recommend to ensure applications are retained even if the position is removed?

Universal Containers wants to implement a recruiting application using an application custom and a position custom object. Each position record may have many applications associated with it.

What solution should the administrator recommend to ensure applications are retained even if the position is removed?
A . Create a master-detail field on Position.
B . Create a lookup field on Applicant.
C . Create a lookup field on Position.
D . Create a master-detail field on Applicant

Answer: B