Correct option is C
Option A: "Increase muscle glycogen by 25gm/kg of muscle weight"
This statement is incorrect. The increase in muscle glycogen due to carbohydrate loading is not typically 25 grams per kg of muscle weight. The typical glycogen storage increase is about 100-200 grams of glycogen overall for an athlete, but not as high as 25 gm per kg of muscle mass.
Option B: "One gram of muscle glycogen is stored with 3-4 grams of water"
This statement is correct. It is a well-established fact that for each gram of glycogen stored in the muscles, approximately 3-4 grams of water are stored alongside it.
Option C: "One gram of muscle glycogen is stored with 8-9 grams of water"
This statement is correct. In some cases, research suggests that for each gram of glycogen, 8-9 grams of water might be retained, particularly under specific conditions like extreme hydration status or intense carbohydrate loading.
Option D: "A total of 1-2 kg extra water stored in the body"
This statement is correct. Carbohydrate loading leads to a significant amount of water retention due to glycogen storage, which can result in 1-2 kg of extra water stored in the body.