Answer:
Present value of an annuity due of 1 for 4 periods
Step-by-step explanation:
Installment Sales Contract means a contractual arrangement under which the selling price of products sold in the ordinary course of business is deferred.
Time value of money is the idea that money currently available is worth more than the same amount in the future because of its possible earning power.
In this situation the time value of money concept that is appropriate is the Present value of an annuity due of 1 for 4 periods.