On March 1, 2016, Mandau Services issued a 7% long-term notes payable for $21,000. It is payable over a 3-year term in $7,000 principal installments on March 1 of each year, beginning March 1, 2017. Each yearly installment will include both principal repayment of $7,000 and interest payment for the preceding one-year period. What is the amount of total cash payment that Mandau will make on March 1, 2017?

a. $7,000

b. $8,470

c. $21,000

d. $7,735