Which Statement Is True

Which statement is true?

A) Nonself substances are major histocompatibility proteins that have been altered by T cells.
B) Prostaglandins are a type of cytokine involved in dilating blood vessels during inflammation.
C) Interferons help defend against viral pathogens by binding to the virus and causing it to lyse.
D) Major histocompatibility complex II proteins occur on the surfaces of a broader range of cell types than major histocompatibility complex I proteins.
E) Major histocompatibility complex proteins are used in identifying self from nonself substances.