Ryan Was Running His First Marathon with a Friend, and After

Multiple Choice

 Ryan was running his first marathon with a friend, and after drinking a lot of plain water, he dropped out of the race. At the hospital, he was diagnosed with hyponatremia and treated for

A) a wide range of problems resulting from his failure to release ADH.
B) dehydration of organ tissues, including the brain, due to water moving into the hypertonic blood supply.
C) a dangerous loss of fluid due to constant urination.
D) swelling of the brain due to low sodium levels.