Wilde Vinthers produces and sells wine. The following data concern the three varietals of white wine the company currently offers. Sales data for November are given as follows: Required: a. Compute the sales price variance for all three wines. b. Compute the sales activity variance for Wilde Vintners for November. c. Compute the mix and quantity variances for Wilde Vintners for November. Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. b. Compute the sales activity variance for Wilde Vintners for November, c. Compute the mix and quantity variances for Wilde Vintners for November. Note: Do not round intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option