What is a capability of the Import within Contact Builder? Choose 2 Answers

What is a capability of the Import within Contact Builder? Choose 2 Answers
A . The data source can be a local file, data filter, or file on any FTP.
B. The target destination can be a DE, list, or All Contacts for Mobile Push or Connect.
C. Like the Import Wizard, the Contact Builder import definition can be executed without saving.
D. In order to use Map by Header Row, the fields in the DE and file must match exactly.

Answer: B,D