Find the Degree of the Polynomial $15 x^{8} y z-5 x^{6} y^{2}+x^{5} y z^{3}$

Find the degree of the polynomial.
- $15 x^{8} y z-5 x^{6} y^{2}+x^{5} y z^{3}$

A) 8
B) 5
C) 10
D) 6