A company sells a product with the following unit standard cost card:$Selling price$50$Variable cost$20$Fixed production overhead$5$Profit$25$This information is based on budgeted sales of $1,700$ units.Actual selling price was $$48,$ unit variable costs were $$22$ and unit fixed cost $$4.$ Actual saleswere $1,800$ and $1,950$ units were made. The company currently uses marginal costing.What was the sales volume variance?a$.$$$4,500($F$)$b$.$$$6,000($F$)$c$.$$$3,000($F$)$d$.$$$5,000($F$)$