Answer:
The correct answer is letter "D": A and C.
Explanation:
Utility is the satisfaction or joy an individual perceives by consuming a given good or service. Marginal utility is the satisfaction perceived by consuming one more unit of a good or receiving a service one more time. Total utility is the aggregate utility as a result of adding the number of goods or services consumed.
When marginal utility starts falling, total utility could still be rising since even if the consumer is not enjoying the same way the consumption of a good the individual is still adding more units to the consumption. However, there will a point in which the consumption of the good will not represent any satisfaction to the individual not adding more units anymore, thus, total utility starts dropping.
