Identify correct option

Options

A. As `F_(2)` increaes `mu_(s)` also increases
B. `As F_(1)` increases `mu _(k)` also increases
C. `As F_(2)` inreases `mu_(s)` decreases
D. `mu_(s) , mu_(k)` both independent of `F_(1), F_(2)` mass of block

Answer

D