Which three are characteristics of Visual Workflow? Choose 3 answers

Which three are characteristics of Visual Workflow? Choose 3 answers
A . Apex code must be used to update fields in the database.
B. Elements can be used to pass data to legacy systems.
C. Apex code must be used to pass data to legacy systems.
D. Only one version of a flow can be activated at a time.
E. Elements can be used to update fields in the database.

Answer: A, B, D