'Retrenchment' under the Industrial Disputes Act, 1947 includes

(A) Voluntary retirement of the workman

(B) Retirement of the workman reaching the age of superannuation as per the contract of employment

(C) Termination by the employer of the service of a workman as a punishment inflicted by way of disciplinary action

(D) Termination by the employer of the service of a workman for any other reason.