The supreme court held that officers who were in hot pursuit of an armed robbery suspect acted reasonably when they entered the house and began to search for the man because "the fourth amendment does not require police officers to delay in the course of an investigation if to do so would gravely endanger their lives or the lives of others" in: a. payton v. new york b. warden v. hayden c. united states v. watson d. tennessee v. garner