Which is a valid value for the enum EmptyRoleSemantic i…

Which is a valid value for the enum EmptyRoleSemantic in Javax.servlet.annotation.ServletSecurity?

A.
ADMIT

B.
PERMIT

C.
EXCLUDE

D.
DENYALL

E.
ALLOWALL

Explanation:
http://tomcat.apache.org/tomcat-7.0-
doc/servletapi/javax/servlet/annotation/ServletSecurity.EmptyRoleSemantic.html