Which of the following options is a more of a search?
O A police officer pushes in on a car tire which reveals secret compartments where drugs are concealed.
O A pen register is placed on a phone line to record the numbers being dialed by a suspect.
O A police officer scrapes a small paint sample from a vehicle parked in a public lot.
O A police surveillance helicopter flies at a legal altitude over a private residence and sees marijuana growing in the backyard.