What do refracting and reflection telescopes have in common?

Question

a. They both use a convex lens in the eyepiece to focus light.
b. The light rays in both are refracted but not reflected.
c. They both use mirrors and lenses to collect lots of light.
d. The light rays in both are reflected but not refracted.

Answer 1

b. The light rays in both are refracted but not reflected.