Which two fields would need to be added to enable these data extensions for sending?

Northern Trail Outfitters has recently configured MobileConnect and wants to perform single send-outs from within MobileConnect using data extensions that contain automatically refreshed segments.

Which two fields would need to be added to enable these data extensions for sending? (Choose 2 answers)
A . A field of Locale type containing the country code
B . A field of Text type containing the country code plus mobile number
C . A field of Locale type containing the locale code
D . A field of Phone type containing the mobile number

Answer: C,D