In a Young double slit experiment, the wavelength of incident light is 6000 Å. The separation between slits $$S_1$$ and $$S_2$$ is 5 cm and the distance between slits plane and screen is 50 cm, as shown in the figure below. If the resultant intensity at P is equal to the intensity due to individual slits, the path difference between interfering waves is __________ Å.

A

4000

B

3000

C

2000

D

1000