Explanation:

- Initially, the dealer bought a product for Rs. 6000.

- Marked Price = 6000 + 55% of 6000 = Rs. 9300.

- After the first 20% discount, the price = 9300 - 20% of 9300 = Rs. 7440.

- Let the second discount be x%. The shopkeeper’s cost price = 7440 - x% of 7440.

- The shopkeeper marked the price 50% above cost price and sold at 25% discount.

- The selling price (with marked price 50% above) = 7440 * (1.5) * (0.75).

- Solving gives us profit and discounts satisfying conditions.

- Option A: Final DP is not a whole number.

- Option B: Profit = Rs. 790.5 fits; x = 15%.

- Option C: Profit doesn’t match.

- Option D: Profit = Rs. 697.5 fits for x = 25%.

Therefore, Option:2, A, B & D is correct.