Barra Inc. uses tenant$-$days as its measure of activity; a person renting a room for one day is counted as one tenant$-$day. During July, the company budgeted for $3,800$ tenant$-$days, but its actual level of activity was $3,830$ tenant$-$days. The company has provided the following data concerning the formulas used in its budgeting and its actual results for July:

Data used in budgeting:

Fixed element per month

Variable element per tenant$-$day

Revenue

$0$

$ $34\mathrm{.}70$

Wages and salaries

$ $2,700$

$ $7\mathrm{.}70$

Food and supplies

$1,700$

$14\mathrm{.}20$

Facility expenses

$8,200$

$3\mathrm{.}20$

Administrative expenses

$6,700$

$0\mathrm{.}20$

Total expenses

$ $19,300$

$ $25\mathrm{.}30$

Actual results for July:

Revenue

$ $120,321$

Wages and salaries

$ $28,570$

Food and supplies

$ $56,975$

Facility expenses

$ $19,989$

Administrative expenses

$ $7,097$

The revenue variance for July would be closest to:

Group of answer choices

$$11,539$ F

$$11,539$ U

$$12,580$ U

$$12,580$ F