A support block is acted upon by two forces as shown. Knowing that the coefficients of friction between the block and the incline are ($\mu_s = 0.25$ and $\mu_k = 0.20$), determine the force $P$ required to keep the block moving up the incline assuming it is already moving.

A. $52.5$ $N$
B. $97.2$ $N$
C. $124.7$ $N$
D. $233$ $N$
E. $304$ $N$
F. $337$ $N$