Ataxia's internal rate of return on this equipment is 8%. Ataxia's discount rate is also 8%. The payback period on this equipment is closest to (Ignore income taxes.): Click here to view and to determine the appropriate discount factor(s) using the tables provided. Multiple Choice 10 years 6.71 years 5 years 7.81 years EXHIBIT 12B-1 Present Value of $1;(1+r)n1 EXHIBIT 12B-2 Present Value of an Annuity of $1 in Arrears; 1/r(1(1/(1+r)n))