Explain why a protein, which has a sedimentation coefficient of 2.6 S when ultracentrifuged in a solution containing 0.1 M NaCl, has a sedimentation coefficient of 4.3 S in a solution containing 1 M NaCl.
a) Due to increased viscosity of the solution
b) Due to decreased density of the solution
c) Due to increased ionic strength of the solution
d) Due to decreased temperature of the solution