Which of the Following Is a Guideline for Balancing a Redox

Which of the following is a guideline for balancing a redox equation in basic solution by the half-reaction method?

A) Write a balanced half-reaction for the substance oxidized and the substance reduced.
B) Multiply each half-reaction by a whole number so that the number of electrons lost by the substance oxidized is equal to the electrons gained by the substance reduced.
C) Add the two half-reactions together and cancel identical species on each side of the equation.
D) Verify that the total number of atoms,and that the total ionic charge,are equal for reactants and products.
E) all of the above