According to the Criminal Code,which Procedure Designed to Reduce the Trauma

According to the Criminal Code,which procedure designed to reduce the trauma of testifying by children who have been sexually abused is permitted,based on the discretion of the judge?

A) the use of closed-circuit television
B) allowing the child to testify behind a closed screen
C) allowing the use of child-sized chairs
D) allowing the use of dolls or drawings to supplement the child's testimony