A 100-Kg Mass Is Placed on a 25 $\degree$ Incline and Friction Keeps It from Sliding

Multiple Choice

A 10.0-kg mass is placed on a 25.0 $\degree$ incline and friction keeps it from sliding.The coefficient of static friction in this case is 0.580 and the coefficient of sliding friction is 0.520.The mass is given a shove causing it to slide down the incline.Taking down the incline as positive,what is the acceleration of the mass while it is sliding?

A) 0.477 m/s²
B) -0.477 m/s²
C) 1.99 m/s²
D) -1.99 m/s²