Munoz publications established the following standard price and costs for a hardcover picture book that the company produces. standard price and variable costs sales price $ 36.40 materials cost 8.30 labor cost 3.60 overhead cost 6.00 selling, general, and administrative costs 6.90 planned fixed costs manufacturing overhead $ 135,000 selling, general, and administrative 51,000 assume that munoz actually produced and sold 38,000 books. the actual sales price and costs incurred follow: actual price and variable costs sales price $ 35.40 materials cost 8.50 labor cost 3.50 overhead cost 6.05 selling, general, and administrative costs 6.70 actual fixed costs manufacturing overhead $ 120,000 selling, general, and administrative 57,000 required a. & b. determine the flexible budget variances and also indicate the effect of each variance by selecting favorable (f) or unfavorable (u). (select "none" if there is no effect (i. e., zero