Washington Revised Code Title 9A. Washington Criminal Code § 9A.28.010. Prosecutions based on felonies defined outside Title 9A RCW

(1) If the maximum sentence of imprisonment authorized by law upon conviction of such felony is twenty years or more, such felony shall be treated as a class A felony for purposes of this title;

(2) If the maximum sentence of imprisonment authorized by law upon conviction of such felony is eight years or more but less than twenty years, such felony shall be treated as a class B felony for purposes of this title;

(3) If the maximum sentence of imprisonment authorized by law upon conviction of such felony is less than eight years, such felony shall be treated as a class C felony for purposes of this title.