Which of the following is TRUE about revenue center variances?Group of answer choicesAll of the answer choices are correctSales variance is broken down into sales price variance and sales volume variance to find out if the sales variance resulted from a difference in the actual and budgeted selling price per unit or from a difference between the actual and budgeted sales volume.Sales variance is computed as: Actual selling price for actual sales volume minus Budgeted sales price for budgeted sales volume.A favorable sales variance can be resulted from a favorable sales price variance or a favorable sales volume variance or both.