Which Statement About the Diagnosis of Alzheimer's Disease Is True

Which statement about the diagnosis of Alzheimer's disease is true?

A) A presence myeloid plaques allows for a positive determination of AD
B) It cannot be unequivocally determined until post-mortem examination shows NFTs and amyloid plaques.
C) Florbetapir (Amyvid) , a small molecule that binds β-amyloid, can be used in combination with PET scan to confirm an AD diagnosis.
D) Fluortaucipir F18 (Tauvid) as a PET tracer to visualizes tau protein aggregates to confirm an AD diagnosis.