Social/ etiquette/ limit/ what/ can/ say/ but/ non-verbal/ cues/ can/ communicate/ thoughts

A. Social etiquette limits what can say, but non-verbal cues can communicate thoughts.

B. Social etiquette limit what can be said, but non-verbal cues can communicate thoughts.

C. Social etiquette limits what can be said, but non-verbal cues can communicate thoughts.

D. Social etiquette limited what can be said, but non-verbal cues can communicate thoughts.