Sammy Contributes 4% of Her Salary to a 401(k) Plan

Multiple Choice

Sammy contributes 4% of her salary to a 401(k) plan, $50 per pay period to a charitable contribution, $140 per pay period to union dues, and $50 per pay period to a section 125 qualified insurance plan offered by her employer. Which contributions must be taken on a post-tax basis? (Select all that apply.)

A) 401(k) contribution
B) Charitable contribution
C) Union dues
D) Section 125 insurance plan