explain your answer, I'm not sure about F!!!

Which of the following equations will allow you to solve the ROR for the following cash flow? Year Cash Flow 0 -$10,000 $1,000 $1,000 $1,000 $1,000 $1,000 $6,000 2 4 5 6 A.=-10,000 + 1,000(P/A,i",6) + 5,000(P/Fi*,6) B. 0-10,000 + 1,000(P/A,i",6) + 1,000(P/Gi',6) c. 10,000 1,000(P/A,i*,5) + 6,000(P/Fit,6) D. 10.000-1,000(P/Gi*.5) + 5,000(P/Fi+,6) e) ) @ E. Both A and D are correct F. Both A and C are correct