For a Search Incident Arrest to Be Constitutionally Valid, the Search

For a search incident arrest to be constitutionally valid, the search must be contemporaneous to the arrest. What does this mean?

A) the search must be conducted at the exact time that the arrest occurs.
B) the search is conducted at the same time, or shortly thereafter, the point at which probable cause to arrest develops.
C) the search is conducted at the same time, or shortly thereafter, the point at which reasonable suspicion to arrest develops.
D) the search must be conducted at the exact time and location that the arrest occurs.