Features of pyloric stenosis: (A) Hypokalemic alkalosis, (B) Peristalsis right to left, (C) Commonly caused by carcinoma stomach, (D) Retention vomiting present
Answer is A. Because of vomiting-hypochloremia hyponatremia, hypocalcemia, hypomagnesemia alkalosis occurs. Reference: SRB edition:5th page no: 829