Answer:
Option A,$72000
Explanation:
Bad debt expense is computed on the net credit sales amount, in other words, the bad debt expense is 12% of credit sales of $600,000.
Bad debt expense=$600,000*12%
=$72000
Option C is wrong because the answer was arrived at by calculating 12% of $750,000 the net sales amount that also has cash sales of $150,000 included in it($750000-$600000)
Option B is wrong as the amount of sales returns and allowances of $50,000 was deducted from $600,000 prior to applying 12% allowance for bad debt