Using the MU theory to derive the marginal utility for gobe which is a giffen good

Using the MU theory to derive the marginal utility for ice cream which is a normal good

Economists use the term Marginal Utility (MU) to mean the:(a) Additional satisfaction gained divided by the additional cost of the lastunit;(b) Total satisfaction gained when consuming a given number of units;(c) The process of comparing marginal units of all goods, which could bepurchased.(d) Additional satisfaction obtained by consuming one extra unit of agood

Marginal utility is:Multiple Choicediminishing.constant.increasing.unpredictable.

Which is a dimension or assumption of the marginal-utility theory of consumer behaviour

Calculate the marginal rate ofsubstitution for an arbitrary commodity bundle of the form (x, y) >>(0, 0) (that is, where x > 0 and y > 0) for each of the following utilityfunctions.(a) Quasi-Linear Preferences Example 1: U (x, y) = x + py.(b) Quasi-Linear Preferences Example 2: U (x, y) = x + ln (y).(c) Stone-Geary Preferences: U (x, y) = (x x 0 ) ↵ (y y 0 ) 1↵ ,where x 0 > 0, y 0 > 0, and ↵ 2 (0, 1) are fixed parameters.(d) Constant-Elasticity-of-Substitution (CES) Preferences:U (x, y) = (↵x ⇢ + y ⇢ ) 1⇢ , where x 0 > 0, y 0 > 0, and ↵ 2 (0, 1)are fixed parameters