After a Marathon Race, a Higher Than Normal Plasma Uric

After a marathon race, a higher than normal plasma uric acid level is observed in the runner, because

A) the renal threshold for uric acid has been reached.
B) of a high ATP turnover.
C) of connective tissue anabolism.
D) of the unusually high turnover of muscle contractile proteins.
E) the catabolism of uric acid is dependent upon its conversion into a glycoconjugate.