What is the impact on SiteScope performance when the number of alert definitions increases?

A.
Performance improves because only monitors that have associated alerts will be run.

B.
Performance improves because only monitors that have associated alerts and are in Error status
will be run.

C.
Performance is unaffected.

D.
Performance is degraded because after a monitor that has an associated alert is run, its Status
must be checked against the alert trigger.