$(7$pts$)$ Dublin Air uses two measures of activity, flights and passengers, in the cost formulas in its budgets and

performance reports. The cost formula for plane operating costs is $$36,210$ per month plus $$2,052$ per flight

plus $$1$ per passenger. The company expected its activity in October to be $81$ flights and $231$ passengers, but

the actual activity was $80$ flights and $236$ passengers. The actual cost for plane operating costs in October was

$$196,000.$ The activity variance for plane operating costs in October would be closest to:

A$)$ $$2,047F$

B$)$ $$6,653U$

C$)$ $$2,047U$

D$)$ $$6,653F-$