Which statement is true about field update actions from workflow rules and approval processes? Choose 2 answers

Which statement is true about field update actions from workflow rules and approval processes? Choose 2 answers
A . Field update with “re-evaluate workflow rules” selected can cause a recursive loop if the updated field is included in a workflow.
B . Field update are not available on currency field if the organization uses multi-currency.
C . Field updates to records based on workflow rules and approval processes do not trigger validation rules
D . Field updates are tracked in the history related list of a record regardless of whether or not History tracking is set for those fields.

Answer: A,C

Explanation:

https://help.salesforce.com/apex/HTViewHelpDoc?id=workflow_field_update_considerations.htm&language=en