1. Which of the following is/are not true about Indifference Curve? (more than one may becorrect, select all correct answers for full credit) a. Every indifference curve corresponds to one combination of good x and y. b. An individual is indifferent between any two points on a given indifference curve. c. Utility remains constant along any given indifference curve. d. Indifference curves between a good and bad are upward-sloping. e. Indifference curves cannot cross as long as the individual has consistent preferences.Indiffchaned f. Indifference curves for Perfect Substitutes are L-shaped.