Please answer and show work!

D&B Ice Cream budgeted sales of 136,000 units of flavor C, assuming that the company would have 16 percent of 850,000 units sold in a particular market. The actual results were 126,000 units, based on a 14 percent share of a total market of 900,000 units. The budgeted contribution margin is $6 per unit. Compute the sales activity variance, and break it down into market share and industry volume