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(80 points) Briefly explain how (if at all) each of the following would change the elasticity of the demand curve for domestic workers in the domestic movie making industry. a. (20 points) A new requirement for workers in the Chinese movie making industry that they take 10 years of training before they are allowed to work. b. (20 points) Imposition of a "sin tax" on all sales of movie tickets and DVD's. C. (20 points) Invention of robots which perform many of the same tasks as the workers. d. (20 points) A nationwide campaign to induce families to substitute one night out at the movies for a night at home in order to reduce air conditioning energy needs in the summer. You should assume that this makes movies less substitutable for households