Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to select a laptop desk [title] Check your working conditions. [step] Do you travel frequently in a car or do you need a lap desk to work while you are sitting by the pool or do you need a wall mount in your home to keep the laptop away from your baby. Different requirements have different solutions.

Ending1: [title] Select a light-weight and tough material that is resistant to impact loading. [step] Polycarbonate is great for this purpose. Ending2: Review your company's website or call the company to ask how much flexibility you'll need in terms of work schedule. [title] Go for a laptop with adjustable case cases. Ending3: [substeps] Water-able laptops are the best as they work effectively. They are 24 feet by 38 feet high. Ending4: [title] Decide whether or not you want a roof mounted laptop. [step] Or you could choose a metal-mounted laptop.

Answer format: ending1/ending2/ending3/ending4