The formula for the resolving power (resolution distance)of a lens is λ/2NA (wavelength /2 x numerical aperture).What does this say about resolving power

A)The smaller the wavelength,the greater the resolving power of the lens.
B)Resolving power is not related to the lens' numerical aperture.
C)We cannot precisely calculate a lens resolving power.
D)A larger resolving power is indicative of a better lens.