A debit to Sales Returns and Allowances and a credit to Accounts Receivable: A. Reflects an increase in amount due from a customer. B. Recognizes that a customer returned merchandise and/or received an allowance. C. Requires a debit memorandum to recognize the customer's return. D. Is recorded when a customer takes a discount. E. All of these

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.

account a is the answer. process of elimination