Two luminous point sources separated by a certain distance are at 10 km from an observer. If aperture of his eye is `2.5 xx 10^-3 m` and wavelength of light used is 500 nmm, the distance of separation between point sources are just seen to resolved is

Options

A. 1.22 m
B. 12.2 m
C. 24.4 m
D. 2.44 m.