Proponents of Nuclear Power Proclaim Nuclear Power Releases No Carbon

Proponents of nuclear power proclaim nuclear power releases no carbon dioxide. Critics point out that carbon dioxide is released at all of the following points except

A) during the 10 year + construction of the plant
B) during the processing the tons of concrete for construction
C) during the operation of the nuclear plant
D) during mining of the uranium ore
E) during the concentration of the uranium ore