What is the relationship between radiopharmaceuticals, tracers, and radionuclides?
A
A tracer is part of a radiopharmaceutical, which functions as a radionuclide.B
A radiopharmaceutical is part of a radionuclide, which functions as a tracer.C
A radionuclide is part of a radiopharmaceutical, which functions as a tracer.D
A tracer is part of a radionuclide, which functions as a radiopharmaceutical.