Light of wavelength λ=5890A˚ falls on a double-slit arrangement having separation d=0.2 mm . A thin lens of focal length f=1 m is placed near the slits. The linear separation of fringes on a screen placed in the focal plane of the lens is
(1) 3 mm
(2) 4 mm
(3) 2 mm
(4) 1 mm