Concept:Trade discount is deducted first from the invoice value.Cash discount is then calculated on the reduced balance.Explanation:Invoice amount =D96,240Trade discount rate =1221%=12.5%Amount after trade discount:96,240×0.875=D84,210Cash discount rate =20%Amount after cash discount:84,210×0.80=D67,368Since Mr. Dauda paid within the credit period, he enjoys both discounts.Answer:Amount paid =D67,368, which is Option C.