Below a word is given followed by three sentences which consist of that word. Identify the sentence/s which best expresses the meaning of the word. Choose option 5 (None of these) if the word is not suitable in any of the sentences.

Complacent

(A) Your duty is to ensure that everyone is complacent with regulations.

(B) I am amazed by the way they maintain order and complacent.

(C) We cannot afford to be complacent with his security.