Complaint means allegation in writing made by a complainant that

A. An unfair trade practice or restrictive trade practice has been adopted by any traders or service provider

B. The goods bought by him or agreed to be bought by him suffer from one or more defect

C. A trader of the service provider as the case may be has charged for the goods or for the services mentioned in the complaint a price in excess of the price

D. All of the above

Answer: Option D