A、  B、  C、  B本句是询问预定的所有权在何时变更的When疑问句。

To whom may I direct this call?
(A)For the fall line.
(B)To ask for some directions.
(C)Mr. Richard Steele.

When is the scheduled ownership turnover?
(A)A signed contract.
(B)This March.
(C)She overturned our decision.