RCW 10.40.190
Refusal to answer.
If the defendant fail or refuse to answer the indictment or information by demurrer or plea, a plea of not guilty must be entered by the court.
[ 1891 c 28 § 62; Code 1881 § 1061; 1873 p 232 § 224; 1854 p 116 § 88; RRS § 2115.]