In each question a word is given in bold, using this word three sentences are given. Choose the set of sentence(s) that has/have the correct usage of the given word.

Dubious
(A) Some people look at others' successes and feel deeply dubious
(B) The assumption that growth in one country benefits the whole world is highly dubious.
(C) He's under investigation because of his dubious accounting practices.

Correct option is E

‘Dubious’ means being doubtful or uncertain. Here, only (B) and (C) have the correct usage of the word. Whereas, in sentence A, the correct word will be ‘envious’ which means being jealous.