The Blacklisting was once common however now illegal in the labor market practice of: (i) Boycotting the products of firms whose workers are on strike. (ii) Forcing the workers to sign agreements not to join the unions. (iii) Paying the union officers to systematize unions in sweatshops. (iv) Barring the customer access to firms whose workers were out-on-strike. (v) Circulating the names of union organizers between anti-union firms.
Choose the right answer from the above options.