With reference to the requirements under IMO MODU CODE，Operating manuals containing guidance for the safe operation of the MODU unit for both normal and envisaged emergency conditions， to the satisfaction of the Administration should be provided on board and be readily available to all concerned. The manuals should， in addition to providing the necessary general information about the unit， contain guidance on and procedures for the operations that are vital to the safety of personnel and the unit.The operating manual for normal operations should include the following general descriptive information（）

A.a description and particulars of the unit
B.a capacity plan showing the capacities and the vertical， longitudinal and transverse centers of gravity of tanks and bulk material stowage spaces
C.Fuel oil storage and transfer procedures
D.All of above