Which one of the following food grains is most coarse

Paspalum scrobiculatum, commonly called Kodo millet, is an annual grain that is grown primarily in Nepal. Millets fall in the category of coarse millet, hence it is also a very hard and coarse crop that is drought tolerant and can survive on marginal soils also. Kodo millet has a large potential to provide nourishing food to subsistence farmers.