A patient with pulmonary edema is receiving furosemide (Lasix),a kaliuretic diuretic.He has lost 6.6 lb over a 48-hr period.Which statement is true?

A) His urinary output has decreased.
B) He has lost water weight.
C) He will become hyperkalemic if the furosemide is continued.
D) The loss of 6.6 lb causes "tenting."