Answer:
c. a small number of firms are acting strategically.
Explanation:
The Firms in oligopoly can influence market outcome and thus they act strategically to achieve the expected outcome.
The amount of interest you are charged on credit card purchases
This is an example of FRAUD. Fraud is defined as any wrongful or criminal deception which is aimed at obtaining personal gains, which can be financial or otherwise. There are different types of fraud, they include: fraudulent financial statement, bribery and corruption, misappropriation of assets, embezzlement of company's funds, etc. All frauds are illegal.
