Budgeted sales of product V are 4,800 units per month. The standard selling price and variable cost of product V are $45 per unit and $22 per unit respectively. During June the sales revenue achieved from actual sales of 4,390 units of product V amounted to $231,900. Required: (a) The sales price variance for product V for June was $ adverse/favourable (delete as appropriate). (b) The sales volume contribution variance for product V for June was $ adverse/favourable (delete as appropriate)