C.
The door is made of glass, which is an example of non-porous surface.
Ninhydrin is one of the most widely used reagents for chemical development of fingerprints on porous surfaces.
The correct answer would be C. Hope this helps.
<span>Deciduous forests are primarily located or can be found in North America, and the middle of Europe. Therefore, it is not true that it is found in the Africa. Also, there are deciduous forests in Asia such as in Russia, eastern China, and Japan. In South Africa, deciduous forests are found in Chile and Middle East coast of Paraguay. </span>
