Which of the following are challenges raised by new tools for digital communication? Select all that apply.
选项：

A:Providers are not reimbursed for some forms of communication, like social media.
B:When people are always connected by digital devices, some providers feel obligated to constantly respond to digital communication, creating a “time creep.”
C: As doctors and patients communicate in new, different ways, there may be risks to the privacy of patients’ data.
D:New communication tools may change the relationship between doctors and patients.