Figure shows a uniformly charged hemisphere of radius R. It has a volume charge density \[\rho .\] If the electric field at a point 2R, above its center is E, then what is the electric field at the point 2R below its center?

• A. \[\rho R/6{{\varepsilon }_{0}}+E\]         
• B.        \[\rho R/12{{\varepsilon }_{0}}-E\]
• C. \[-\rho R/6{{\varepsilon }_{0}}+E\]
• D.        \[\rho R/12{{\varepsilon }_{0}}+E\]