Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to detect counterfeit us money [title] Feel the texture of the paper. [step] Counterfeit money will often feel distinctly different from authentic money. [substeps] Authentic money is made from cotton and linen fibers.

Ending1: If a bill is made of cotton and linen, this may be a counterfeit. Ink is injected into the face near an inconspicuous part of the bill to make it look authentic. Ending2: When glossy, this is the only texture that should be visible but loose and difficult to the touch. Real money will feel grainy and hollow, with textured lines. Ending3: Other counterfeit amounts and textures can seem natural, even though a misreaction will likely have produced the difference. Counterfeit dollars will usually be tough to read, but if the texture is hard to decipher, there's a good chance it is counterfeit money. Ending4: This differs significantly from normal paper, which is made from trees. Real money is made to be more durable and should feel crisp despite its age; normal paper becomes torn and soft when worn.

Answer format: ending1/ending2/ending3/ending4