A Light Spectrum Is Formed on a Screen Using a Diffraction

Multiple Choice

A light spectrum is formed on a screen using a diffraction grating.The entire apparatus (source, grating and screen) is now immersed in a liquid of index 1.33.As a result, the pattern on the screen:

A) remains the same
B) spreads out
C) crowds together
D) becomes reversed, with the previously blue end becoming red
E) disappears because the index isn't an integer