The net reaction during the discharge of nickel-cadmium battery is :
A. `2Ni(OH)_(2)+Cd+H_(2)O to 2Ni(OH)_(2)+Cd(OH)_(2)`
B. `2Ni_(2)O_(3)+Cd+O_(2) to 2Ni(OH)_(3)+Cd(OH)_(2)`
C. `2Ni(OH)_(3)+Cd toCdO+2Ni(OH)_(2)+H_(2)O`
D. `2Ni(OH)_(2)+Cd+O_(2) to 2Ni(OH)_(2)+CdO`
