A．これはいっしょうの問題です。

B．これはいっしょの問題です。

C．これはいしょうの問題です。

A vessel in ocean service that does not have an approved means of processing oily bilge slops or oily ballast must have（）.

A.a fixed piping system for ballast discharge to a reception facility

B.a discharge outlet for the ballast system on each side of the weather deck

C.one portable adapter for a shore connection to the ballast line

D.All of the above