Two point white dots are 1 mm apart on a black paper. They are viewed by eye of pupil diameter 3 mm. Approximately, what is the maximum distance at which these dots can be resolved by the eye? [Take wavelength of light $= 500\,\mathrm{nm}$]\\
(1) 5 m\\
(2) 1 m\\
(3) 6 m\\
(4) 3 m