In Which of the Following Ways Is an IACUC Different

In which of the following ways is an IACUC different from an IRB?

A) IACUCs are optional at universities conducting animal research; IRBs are mandatory at universities conducting human research.
B) Seeking permission from an IACUC is recommended but not required for animal research; IRB approval is required for human research.
C) IACUCs monitor the care and treatment of animals throughout the study; IRBs do not monitor the care of human participants throughout the study.
D) IRBs must follow federal guidelines, but IACUCs do not have federal guidelines to follow.
E) All of the above are differences between IACUCs and IRBs.