Variance analysis, sales$-$mix and sales$-$quantity variances. Miami Infonautics, Inc., produces Windows phones. Miami Infonautics markets three different handheld models: WinPro is a souped$-$up version for the executive on the go$,$ WinCE is a consumer$-$oriented version, and WinKid is a stripped$-$down version for the young adult market. You are Miami Infonautics$$ senior vice president of marketing. The chief executive officer $($CEO$)$ has discovered that the total contribution margin came in lower than budgeted, and it is your responsibility to explain to him why actual results are different from the budget. Budgeted and actual operating data for the company$$s third quarter of $2020$ are as follows: