Indicate Whether Each of the Following Descriptions Better Applies to the Determination

Short Answer

Indicate whether each of the following descriptions better applies to the determination of atomic structure of proteins by x-ray diffraction (X) or by nuclear magnetic resonance (NMR) spectroscopy (N). Your answer would be a five-letter string composed of letters X and N only, e.g. NNXNN.
( ) It is more suitable for complexes larger than about 100 kD.
( ) It requires samples to crystallize.
( ) It can better reveal dynamics of molecular motions.
( ) It involves the calculation of electron-density maps.
( ) It is used to determine the solution structure of proteins.