The statement true of a concave lens is Option A.
Concave lens is a type of spherical lens which is polished from outside and it reflects the light coming from the object through its inner surface.
This lens is diverging in nature which means that the light rays gets diverged after reflection.
The nature of the image formed by these lens is virtual and the size of the image will be less than the object and the image formed will be upright.
Hence, the correct option is A.
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