State the type of barrier mentioned in the following statements:

State the type of barrier mentioned in the following statements:
(i) These are concerned with encoding/decoding of messages.
(ii) A worried person cannot communicate properly.
(iii) Authority relationships and rules and regulations obstruct communication.
(iv) Personal factors of both sender and receiver.

(i) Semantic barriers
(ii) Psychological barriers
(iii) Organisational barriers
(iv) Personal barriers