Option B
The end of the tail has a large tuft of hairs on it.
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There are 6 species recorded in Tanzania: Tatera boehmi, Tatera inclusa, Tatera leucogaster, Tatera nigricauda and Tatera valida. These rodents are sometimes called the naked-soled gerbils, because of the lack of hair on the soles of the hind feet. Differentiation among the different species within this genus is difficult.