Which of the following statements is true concerning dealing and rollovers at non-current rates?

[answerhappygod]

Which of the following statements is true concerning dealing and rollovers at non-current rates?

A. When setting the rates for an FX swap to extend the maturity, the spot rate should be fixed immediately within the current spread
B. Where the use of non-current rates may be necessary, they should only be entered into with the prior explicit permission of the quoting partys senior management
C. Dealing and rollovers at non-current rates are relatively common market practice and therefore should not be treated differently from any other transaction
D. Dealing and rollovers at non-current rates are forbidden as they can help perpetrate fraud and tax evasion