The minimum force required to start pushing a body up rough (frictional coefficient u) inclined plane is \[{{F}_{1}}\]while the minimum force needed to prevent it from sliding down is\[{{F}_{2}}\]. If the inclined plane makes an angle \[\theta \] from the horizontal such that\[\tan \theta =2\mu \] then the ratio \[\frac{{{F}_{1}}}{{{F}_{2}}}\] is

• A. 1         
• B. 2     
• C. 3         
• D. 4