Northern Trail Outfitters is using a Salesforce entry event in a Journey to send SMS to contacts located in the United States. They notice new SMS contacts are not receiving messages, and the mobile number in the Salesforce Entry Data Extension was missing the country code.
How could they resolve this issue?

A. Select 'Normalize Phone Number* in Journey settings.

B. Format the phone field in Salesforce as +l[phonenumber],

C. Select 'US' as the sending country in SMS activity.

D. Configure the phone field in Salesforce as US locale.