The summation of monopolistic exploitation across all the workers tends to raise however a firm as well operates at a more communally and economically proficient level of output and employment whenever the firm is capable to engage in: (i) Black-listing in its dealings with the unions. (ii) Yellow dog contracts throughout collective bargaining. (iii) Feather-bedding in its hiring practices. (iv) Price discrimination in output market. (v) Efficiency salary setting in its employment strategies.
Find out the right answer from the above options.