Option D is correct , Both A and C.
Explanation:
Price discrimination is a technique of micro-economic manipulation, where the same manufacturer transacts equal or substantially equivalent products or services in various markets at different prices.
Price discrimination occurs on the market where the same manufacturer sells similar goods or services at various prices. There was a misunderstanding. While production costs are the same, the retailer is able to improve price based on the location, financial standing of buyers, demand for products, etc.