Which of the Following Statements About Specific and Nonspecific Defenses

Which of the following statements about specific and nonspecific defenses is false?

A) Defense systems involve recognition of self from nonself.
B) Nonspecific defenses typically act more rapidly than specific defenses.
C) Specific defense mechanisms are typically the body's first line of defense.
D) The skin is an example of a nonspecific defense.
E) All of the above are true; none is false.