The options referred to in paragraph 1 may be combined in respect of a single operation only where each option is applied to different categories of costs or where they are used for successive phases thereof.
Ní fhéadfar na roghanna dá dtagraítear i mír 1 a chomhcheangal i ndáil le hoibríocht aonair ach amháin i gcás ina gcuirtear gach rogha i bhfeidhm ar chatagóir éagsúil costas nó i gcás ina n-úsáidtear iad le haghaidh céimeanna leantacha de.