From an Economic Perspective, Why Is Requiring Companies to Pay

From an economic perspective, why is requiring companies to pay higher wages or re-train their employees a simple solution?

A) Companies are greedy and not interested in their workers' well-being.
B) The public would never agree on how this would be enforced in a bipartisan and contentious democracy.
C) Shouldering companies with additional costs could end up putting companies out of business and eliminating jobs.
D) Workers would become complacent and less productive.