Which of the following statements is true with respect to arrests?

1) In order to arrest an individual in public, an arrest warrant is required if there is sufficient time to obtain one prior to arrest. 2) Arrests in public without a warrant are always unconstitutional unless there is an exigency authorizing an immediate arrest.

3) Consent searches, even in conjunction with a lawful arrest, are illegal unless the police have an arrest warrant.

4) A warrant is not required for an arrest in a public place provided the arrest is based on probable cause.