Answer: Total interest.
Step-by-step explanation:
Since In the formula,
[tex]I = \frac{2yc}{m(n+1)}[/tex]
Where,
[tex]y[/tex] = payments per year,
[tex]c[/tex] = total interest paid,
[tex]m[/tex] = amount financed,
[tex]n[/tex] = total number of payment,
[tex]I[/tex] = true interest rate.
Thus, Second option is correct.