B) Both chefs are correct.
Both the swimming method and the basket method are valid techniques for deep-frying battered fish. The swimming method involves gently placing the battered fish in the oil without a basket, allowing it to float and cook evenly. The basket method involves using a frying basket to hold the fish while it's submerged in the oil, which helps keep it from sticking to the bottom and makes it easier to handle. Each method can yield delicious results, so both chefs are correct.