If the Lens Diameter Is Doubled, What Happens to the Resolvable

Multiple Choice

If the lens diameter is doubled, what happens to the resolvable angle of images produced at fixed wavelength?

A) The angle decreases by a factor of two.
B) The angle increases by a factor of two.
C) The angle decreases by a factor of four.
D) The angle increases by a factor of four.
E) The angle stays the same.