In simple words, price discrimination in America is illegal only when it impedes competition in market or is done on the basis of race, religion etc. America is a capital intensive market which makes it a free market as well, in such a market framework, the market forces affect the prices and competition always remains high.
Therefore, monopolies are the only firms that can perform price discrimination to some extent.
The right answer for the question that is being asked and shown above is that: "B. debit to Sales Returns and Allowances for $125.00. " Five necklaceswere returned prior to payment. The entry to record the return would include a B. debit to Sales Returns and Allowances for $125.00.