The CRM Manager at Universal Containers has requested that a custom text field be converted to a picklist in order to promote better data hygiene. What needs to be considered before changing the field type? (Choose 2 answers)

A. Existing list views that reference the field may be deleted.

B. Field references will be removed in Visualforce pages

C. All data should be backed up before converting a text field.

D. Changing a field type will remove existing field history.