A CUCM engineer has deployed TypeSIP Phones on a remote site and no SIP dial rules were deployed for these phones. How will CUCM receive the DTMF after the phone goes off- hook and the buttons are pressed? 

Answer options:

A. Each digit will be received by CUCM in a SIP NOTIFY message as soon as they are pressed.
B. The first digit will be received in a SIP INVITE and subsequent digits will be received using notify MASSAGE as soon as they are pressed.
C. Each digit will be received by CUCM in a SIP INVITE as soon as the dial softkey has been pressed.
D. All digits will be received by CUCM in a SIP INVITE as soon as the dial softkey has been pressed

B