Gershon 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 $38,720 per month plus $2,061 per flight plus $9 per passenger. The company expected its activity in June to be 76 flights and 238 passengers, but the actual activity was 75 flights and 239 passengers. The actual cost for plane operating costs in June was $196,310. The spending variance for plane operating costs in June would be closest to A) $864 F. B) $1,188 F. C) $864 U. D) $1,188 U.