TRUE statement about nonrenal cause of hypokalemia among the following is:
Loss of K in sweat is a usual cause of hypokalemia Direct gastric losses of K+ due to vomiting or nasogastric suctioning is minimal Hypochloremic alkalosis due to vomiting results in persistent kaliuresis due to secondary hypoaldosteronism Colonic pseudo-obstruction (Ogilvie's syndrome) is due to hyperkalemia