As per Section 2(1)(c) of Consumer Protection Act 1986, 'complaint' means any allegation in writing made by a complainant that
(1) An unfair trade practice or a restrictive trade practice
(2) The goods/services bought/hired suffer from one or more defects/deficiency
(3) A trader or service provider has charged a price in excess of the price
(4) Goods/services which are hazardous or likely to be hazardous to life and safety of the public when used

A. (1), (2) and (3)

B. (1), (2) and (4)

C. (1), (3) and (4)

D. (1), (2), (3) and (4)

Answer: Option D