A bright fringe is observed at angle 401 rad in a Young's double slit experiment with slit separation 0.1 mm using light of wavelength λ1. When light of wavelength λ2 is used, a bright fringe is seen at the same angle in the same setup. Given that λ1 and λ2 are in the visible range (380 nm to 740 nm), their values are:
a. 625 nm, 500 nm
b. 380 nm, 525 nm
c. 380 nm, 500 nm
d. 400 nm, 500 nm