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Physics Dispersion of Light? - index.of jpg lingerie

I just need some verification or link for further studies to address these problems.
See picture here: http://www.sellmontana.com/misc/1.jpg


1. The graph of the wavelength compared to the refractive index shows that the distribution of 1, the index of refraction:
A. is greater for wavelengths.
Example, is lower for longer wavelengths.
C is exactly equal to 1 for all wavelengths.
D. The refractive index is a nonlinear function of the wavelength

My answer is: "Is that right?

2. If the spread is wider:

A. The refractive index with wavelength is smaller.
As refractive index with wavelength is bigger.
C. Refractive index changes in the wavelength.
D. I Refractives proportional to the inverse square of the wavelength.

My answer is B, is that right?