Monica was shopping for a new phone when she was detained for suspicion of shoplifting. The detention lasted for 6 hours. If the store manager asserted that he had the right to detain Monica under the shopkeeper's privilege. What does the shopkeeper's privilege require with respect to the length of a detention?

The store can only detain the customer for a reasonable amount of time.

The store must give the customer a Miranda Warning before questioning him or her.

The store can use leg and arm restraints to detain a customer suspected of shoplifting.

The store must obtain a confession from the suspect to prove that a theft has occurred.