If sales totaled $200,000 for the current year (10,000 units at $20 each) and planned sales totaled $212,500 (12,500 units at $17 each), the effect

If sales totaled $200,000 for the current year (10,000 units at $20 each) and planned sales totaled $212,500 (12,500 units at $17 each), the effect of the unit price factor on the change in sales is a: a. $12,500 increase.b. $7,500 increase.c. $37,500 decrease.d. $30,000 increase.