Which of the Following Is NOT a Reason to Use

Multiple Choice

Which of the following is NOT a reason to use a reflecting telescope rather than a refractor?

A) Lenses absorb light, while mirrors do not.
B) Lenses are subject to chromatic aberration.
C) Heavy lenses, which can only be supported at their edges, tend to deform under their own weight.
D) A lens must have two precision surfaces; a mirror needs only one.
E) Lenses are harder to focus than mirrors.