[QA] All of the following are true, EXCEPT

Question:

All of the following are true, EXCEPT

• A.
  Signal, symbols, signs and gestures are found in every culture.
• B.
  Signal, symbols, signs and gestures are very useful.
• C.
  Signal, symbols, signs and gestures also have some disadvantage.
• D.
  Signal, symbols, signs and gestures are only used for long distance contact.