3

This is because it does not make sense to compare chosen options to all other alternatives that are mutually exclusive. For example, if you have 5 choices A, B, C, D, E, you can choose one, and C is the most preferred option it does not make any sense to compare picking C to jointly picking A, B, D and E. Only one of the other options can be pick so you ...


3

Yes, marketing falls under the JEL code of M, specifically M31.


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