In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".

[header] How to buy generic toner [title] Determine if there are generic toner cartridges made for your printer. [step] Manufacturers do usually offer generic toner cartridges for the latest generation of printers. If your device is older, the selection may not be quite as wide, but there is still a good chance that at least a couple of companies produce generic versions of the cartridges you need. <sep> (A) You should always try a few before coming to a " price limit " on products from a company you aren't familiar with. [substeps] You can search online to find generic toner cartridges you don't think you want. (B) [title] Make sure your printer will accept generic tone cartridges. [step] In spite of what some manufacturers would have you think, overriding protocols so a particular make and model of printer will recognize a generic toner cartridge is not always easy or possible. (C) [substeps] It's also best to check online or, if you absolutely must purchase a cartridge at all, talk to similar sellers. Run a quick search to find out more about each company, and then go directly to that page. (D) Large brands or even larger " budget " brands may have different cartridge names and options. [substeps] It is likely that you won't need these cartridges for models older than about 50 years or so.
B