The real-income effect of a price change is most significant when O A. the substitution effect is insignificant. O B. the substitution effect is significant too. O C. the marginal utility per dollar spent on the last unit is high. O D. the good under consideration constitutes a major portion of the consumer's budget.

The real-income effect of a price change is most significant when a O A. the substitution effect is insignificant OB. the substitution effect is significant too O C. the marginal utility per dollar spent on the last unit is high OD. the good under consideration constitutes a major portion of the consumer's budget