21. An ancient Arabian traveled across the desert with nothing for company. ______________ He had poured some milk into a pouch made from a sheep’s stomach.During his journey, he opened the pouch and discovered that the milk hadseparated and formed thick masses, which we call curd, and a watery fluid, which we call whey. The Arabian had accidentally invented cheese.
(A)But he was allergic to cheese, so he had brought only milk for his lunch.
(B)He was glad that he had not brought cheese along because it would be heavy.
(C)But he had brought milk along, as something to drink would be nice.
(D)The Arabian had stored some figs, dates, and oat cakes, except milk.