Lenses Can Be Used to Focus Sunlight to a Small

Multiple Choice

Lenses can be used to focus sunlight to a small point to burn paper or dry brush. A person demonstrates this using their own eyeglasses as the lenses. From this you can tell that

A) the person is farsighted.
B) the person is nearsighted.
C) the person is either near- or farsighted but not both.
D) the person is both near- and farsighted.