Which, If Any, of the Following Statements Is True

Short Answer

Which, if any, of the following statements is true?
a) Autologous cell transplantation is involved in in vivo gene therapies: cells from an individual are genetically modified and then returned to that individual.
b) Adenovirus vectors have the advantage that they offer very high level expression and are well suited to gene therapy for blood disorders.
c) Adenovirus vectors have a better safety profile than adeno-associated virus vectors and have a larger insert size capacity.
d) Adeno-associated virus vectors are well suited to gene therapy for blood disorders but have a low insert size capacity