1. Now, select two people from Jia, Yi, Bing, and Ding to participate in an activity. The rules are: if Jia goes, then Yi also goes; if Bing does not go, then Yi does not go; if Bing goes, then Ding does not go. The two people who finally go to participate in the activity are ( ).
(A) Jia, Yi
(B) Yi, Bing
(C) Jia, Bing
(D) Yi, Ding