Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to fix bent pins on a cpu [title] Find a proper workspace. [step] You want to place the cpu on a hard, flat surface with the pins facing straight into the air. Be sure you have discharged any static electricity by touching a grounded metal object.

Ending1: [title] Wrap a clear rubber sheet around the cpu with a length of old newspapers or cloth. [step] This will prevent the paper from rattling around while you work. Ending2: [title] Find the right card for the job. [step] Typically a standard plastic credit card or gift card will do. Ending3: If the piece of metal does not have a grounded base, leave it alone as possible. Only use a screwdriver or pair of flat work gloves if you can. Ending4: [substeps] Keep aside 6 to 12 feet (1.8 to 1.2 meters) of space between the inside and outside of your cpu. Most type of cpu (and most newer models) build on black wire which juts outside the cpu.

Answer format: ending1/ending2/ending3/ending4