Yesterday, Jenny ran in a marathon race. While she ran, she drank several large cups of water at water stations along the race course. Near the end of the race, she experienced difficulty making it to the finish line. She was confused, and she complained of feeling sleepy and having nausea. Based on this information, Jenny was probably suffering from ________.
A. kidney failure
B. heat cramps
C. brain cancer
D. water intoxication
