Need help with legal aspects

4. If Hassle had detected marijuana cultivation at Spike's repair shop through use of heat sensing technology without physically entering the premises or obtaining a warrant, the court would likely A. allow the marijuana plants into evidence as the use of heat sensing technology is not a search B. allow the marijuana plants into evidence as the use of heat sensing technology is a search but does not require a warrant C. prevent the use of the marijuana plants in court as Hassle did not have probable cause to conduct a warrantless search D. prevent the use of the marijuana plants as heat sensing technology is a search for which a warrant is required 5. If Hassle had detected marijuana cultivation at Spike's repair shop through use of a drug-sniffing dog brought to the front door of the business without obtaining a warrant, the court would likely A. allow the marijuana plants into evidence as the use of a drug-sniffing dog is not a search B. allow the marijuana plants into evidence as the use of a drug-sniffing dog is a search but does not require a warrant C. prevent the use of the marijuana plants in court as use of a drug-sniffing dog under such circumstances is a search for which a warrant is required D. prevent the use of the marijuana plants in court as Hassle did not have probable cause to conduct a warrantless search 6. If Hassle had detected marijuana cultivation at Spike's repair shop through use of a drug-sniffing dog positioned on the public sidewalk in front of the premises without obtaining a warrant, the court would likely A. allow the marijuana plants into evidence as the use of a drug-sniffing dog is not a search B. allow the marijuana plants into evidence as the use of a drug-sniffing dog under these circumstances is a search but does not require a warrant C. prevent the use of the marijuana plants in court as use of a drug-sniffing dog is a search for which a warrant is required in all circumstances D. prevent the use of the marijuana plants in court as Hassle did not have probable cause to bring a drug- sniffing dog to the public sidewalk in front of the premises