A body of mass M is kept on a rough horizontal surface (friction coefficient = μ). A person is trying to pull the body by applying a horizontal force but the body is not moving. The force by the surface on the body is F, where

A F = Mg
B F = μMg
C. Mg ≤ F ≤ Mg √1 +μ²
D. Mg ≤ F ≤ Mg √1 - μ²