Which of the following facts is true regarding the recommendations of the 7th Pay Commission?

• A. In the new pay structure, the Seventh Pay Commission has abolished the 'Pay Grade' system introduced by the Sixth Pay Commission and included it in the pay matrix (structure).
• B. The 7th Pay Commission has recommended the implementation of One Rank One Pension in every department of the Central Government on the lines of armed forces.
• C. The commission has recommended abolition of the system of 'pay band' and 'grade pay' and retained the system of annual increase of 3 per cent in wages.
• D. All of the above