RCW 9A.36.021
Assault in the second degree.
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(2)(a) Except as provided in (b) of this subsection, assault in the second degree is a Class B felony.
(b) Assault in the second degree with a finding of sexual motivation under RCW 9.94A.835 or 13.40.135 is a Class A felony.
RCW 9A.20.021
Maximum sentences for crimes committed July 1, 1984, and after.
(1) Felony. Unless a different maximum sentence for a classified felony is specifically established by a statute of this state, no person convicted of a classified felony shall be punished by confinement or fine exceeding the following:
(a) For a class A felony, by confinement in a state correctional institution for a term of life imprisonment, or by a fine in an amount fixed by the court of fifty thousand dollars, or by both such confinement and fine;
(b) For a class B felony, by confinement in a state correctional institution for a term of ten years, or by a fine in an amount fixed by the court of twenty thousand dollars, or by both such confinement and fine;