What three things should the architect consider when discussing performance testing?

Universal Containers would like to conduct performance testing on its new major release.

What three things should the architect consider when discussing performance testing? Choose 3 answers
A . Salesforce must be informed at least 7 days before starting performance tests.
B. Salesforce will monitor test activity to ensure there are no issues with Salesforce Services.
C. Performance tests must be run in a sandbox.
D. A business justification must be provided to Salesforce in order to run performance testing.
E. Performance tests may be run without advanced notice, but Salesforce will not store performance logs.

Answer: B,C,D