<prompt>  A 41-year-old patient presented with chronic diarrhoea for 3 months. A d-xylose absorption test was ordered to look for -Carbohydrate malabsorption due to mucosal diseaseCarbohydrate malabsorption due to chronic pancreatitisFat malabsorption dure to mucosal diseaseFat malabsorption due to chronic pancreatitis 