Choose the correct order of terms that describes the process of nutrition in ruminants.
(a) swallowing → partial digestion → chewing of cud → complete digestion
(b) chewing of cud → swallowing → partial digestion → complete digestion
(c) chewing of cud → swallowing → mixing with digestive juices → digestion
(d) swallowing → chewing and mixing → partial digestion → complete digestion