18 a) Illustrate the consumption choice for an individual when two goods are considered "perfect complements" in consumption b) Illustrate the consumption choice for an individual when two goods are considered "perfect substitutes " in consumption . c) Illustrate the consumption choice for an individual when the horizontal axis illustrates a good and the vertical axis illustrates and bad. Identify the preferred indifference curves. d) Illustrate the consumption choice for an individual when the horizontal axis illustrates a useless good and the vertical axis illustrates a regular good. Identify the preferred indifference curves. e) Illustrate the consumption choice for an individual when the both goods are considered bads and the consumer has to spend the budget