In Young's double-slit experiment, one slit has a wave source with frequency ω, while the other slit has a wave source with a frequency of 4ω. What is the effect on the interference pattern observed on the screen?

A) The interference pattern will be the same as if both slits had the same frequency.
B) The interference pattern will show regions of constructive and destructive interference with varying intensity.
C) The interference pattern will be completely disrupted, and no pattern will be observed.
D) The interference pattern will shift towards the slit with the higher frequency.