Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to make money from your invention [title] Know the odds for and against you. [step] It is now easier than ever for inventors to design, test, and market their products. However, it also means that more people are trying.

Ending1: Know that you will have competition from similar inventions, no matter what you are attempting to patent. [title] Don't reinvent the wheel-unless you can sell it. Ending2: Individuals are building buildings, and the railroads are losing workers and loans. So if you find yourself struggling, then the worst thing you can do is get out of control. Ending3: In some cases, inventors are forced to create a more technical, expensive product. It is actually ideal for an inventor to take the time to research, design, and bid for and use of their invention, rather than using the invention to guarantee its success. Ending4: Make a living in this industry by designing, copywriting, pasting, and proofreading your work. Let the law be your guide, and work for what it is really worth.

Answer format: ending1/ending2/ending3/ending4