Problem 15-21A (Algo) Determining and interpreting flexible budget variances LO 15-5 Benson Publications established the following standard price and costs for a hardcover picture book that the company produces Assume that Benson actually produced and sold 37,000 books. The actual sales price and costs incurred follow. Required Q. \& b. Determine the flexble budget variances and also Indicate whether each variance is favorable (F) or unfavorable (U). (Select "None" if there is no effect (i.e., zero voriance).)