Union Security Provisions

Union security provisions:

A) are unlawful under the NLRA because they require employers to discriminate against employees who do not support their unions
B) are unlawful in states that have "right to work" laws
C) require that employers recognize and negotiate with the unions chosen by their employees
D) require that employees financially support all union activities, regardless of any objections the employees might have to doing so
E) none of the above