Which of the Following Is a True Statement

Which of the following is a true statement?

A) The same level of suspicion is required to justify a frisk and a full search.
B) A police officer needs more than a hunch to justify both a frisk and a full search, but less is required for a frisk than is required for a full search.
C) Probable cause is required to initially justify a frisk.
D) To stop a person, probable cause is needed; but to frisk a person reasonable suspicion is required.