Explanation

The Rig Veda knows only yava (barley) as its cereal, with dhanya used as a general term for grain; barley was the staple crop of the early Vedic people. Godhuma (wheat) and vrihi (rice) are not mentioned in the Rig Veda and appear only in the later Vedic texts such as the Yajur and Atharva Vedas. The stored key naming godhuma and vrihi is therefore wrong for the Rig Vedic period. The correct answer is option B.