Answer:
Option D is the deficiency of using static planning budget.
Step-by-step explanation:
Static planning budget is a concept where actual costs and budgeted revenue are compared at different level of activity. This is the deficiency which has been highlighted by many financial analyst according to them it’s like comparing apple and oranges. Instead of comparing costs revenue should be compared. A comparison of revenues and costs can lead to incorrect decisions. Budged revenues and costs are a totally different concept than actual cost and revenues, that is why using budged revenues and actual cost for static planning will lead to erroneous conclusion.