Which IRS publication would a volunteer use to determine if a topic is out of scope for VITAITCE?

a$.$ Publication $5166,$ VITA$/$TCE Volunteer Quality Site Requirements

b$.$ Publication $5683,$ VITA$/$TCE Handbook for Partners and Site Coordinators

c$.$ Publication $4012,$ VITA$/$TCE Volunteer Resource Guide

d$.$ Publication $4299,$ Privacy, Confidentiality, and Civil Rights $-$ A Public Trust