Sheffield Co$.$ produces wooden boxes. The company's standards per box require $5$ boards, each costing $$10$ per board, and half of an hour of direct labour. The standard labour rate is $$16$ per hour. In August, Sheffield Co$.$ purchased $12020$ boards for a total cost of $$123900.$ It used $11480$ boards to manufactur $$1810$ boxes. Total labour hours were $940$ hours, and total labour costs were $$16300.$

What was the labour quantity variance for August?

$$13290$ U

$$560U$

$$13290F$

$$560F$