This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to select a monocular
Decide how much magnification power you need.
The magnification power of the monocular will affect how far and how detailed you can see something. Monoculars with higher magnification power will let you see further and in more detail.

OPTIONS:
[A]. Consider cost and depth of vision when deciding on monocular hardware. Selecting a monocular hardware is important because it will answer your questions..
[B]. Find a designated end cap that is close to the eye (eyeyeyer). The end cap of the monocular should be an inch longer than the distance between the eye and magnification device you are using to see the fixed object closely enough..
[C]. While it depends on the monocular type, the lower magnification power (250 or 355) will usually provide the closer and more detail you need to turn certain objects into monoculars. The lower magnification power will let you see further, but will not necessarily zoom fully..
[D]. Most monoculars have a magnification power of 5x to 8x. Though higher magnification can seem like a better option, it will be harder to use the instrument at higher magnifications, as small movements make the image jump more at higher magnifications..
The answer is:
[D].