Company A is going to transfer a 10-year patent use right it owns. There are two bidding schemes, A and B: Party A starts from the first year of obtaining the patent, and pays 100,000 yuan to Company A at the end of each year. Patent royalties; Plan B is to directly pay 400,000 yuan to Company A, and not pay another 600,000 yuan in 8 years. If Company A requires an annual ROI of 15%, then: Which bid to accept? Of Which : (P/A, 15%, 10) =5.0188, (P/F, 15%, 8) =0.3269, (F/A, 15%, 10) =20.304, (15%, 10) =4.0456, ( F/P, 15%, 2) =1.3225.