Western Company manufactures remote control devices for garage doors. the following information was collected during June:

Actual market size(units) 10,000

Actual market share 32%

Actual Average selling price $10

Budgeted market size (units) 11,000

Budgeted market share 30%

Budgeted average selling price $11

Budgeted contribution margin per composite unit for budgeted mix $5

What is the western company's sales quantity variance

a) 1500 U

b) 500 U

C) 500F