Comparing Online and Face-To-Face Groups

Comparing online and face-to-face groups,

A) the process of providing information is the same, but online groups are not a good format for providing emotional support.
B) the process of providing feedback is easier in online groups, but the number of people involved makes information difficult to obtain.
C) few people are willing to reveal emotional details of their lives online, which compromises the effectiveness of these groups.
D) few differences in the support process for these two types of groups.