Choose your answer from:
1). The exact aspect ratio of a screen is still not completely understood by the general scientific reader. Determining the " true widescreen " ratio for a monitor can help you determine the time to install the monitor, and make the most of it.
2). In addition, the 16:9 ratio is the same ratio used by widescreen movies. Unless you specifically need a 16:10 monitor , 16:9 will be the more convenient choice.
3). This ratio (or " ce ") usually used to be about 70/90 but since then, hd monitors have remained accepted by country governments to accommodate hd ratings. This ratio is still used today but given its independence and variety, it is fairly standard.
4). Thus, it is important to determine what aspect ratio is right for you. True widescreen monitors come in 56 mm and 19 mm.Choose from options above and answer: What most naturally follows?

How to buy an hd monitor 
Decide on an aspect ratio. 
The aspect ratio of a monitor is the ratio between the width and the height. In the earlier years of the last decade, the 16:10 aspect ratio was the most popular among hd monitors, but more recently, the 16:9 " true widescreen " ratio has started taking over.
Answer:
2).