A hollow spherical insulator has an inner radius of \( R_{1}=0.14 \) m and an outer radius of \( R_{2}=0.26 \) m. The insulator is uniformly charged with a charge density of \( \rho =2.6 \times 10^{-6} \) C/m^3.

What is the charge density of the hollow spherical insulator?

A) \( \rho =2.6 \times 10^{-6} \) C/m^3
B) \( \rho =2.6 \times 10^{-6} \) C/m^2
C) \( \rho =2.6 \times 10^{-6} \) C/m
D) \( \rho =2.6 \times 10^{-6} \) C

Note: The unnecessary space and words have been removed to make the question more concise and clear.