Why are reputation filters typically the first filters that are applied to inbound emails in content security systems?
A . to remove spam messages, which use SMTP server resources.
B . These filters are the most complicated to run so they are executed first to conserve CPU resources.
C . to reduce the processing load on other filters by eliminating emails from known bad sources.
D . to reduce the processing load on other filters by eliminating emails from known bad sources.
Answer: C