An economy is employing 2 units of capital, 5 units of raw materials, and 8 units of labour to produce its total output of 640 units. Each unit of capital costs $10, each unit of raw materials, $4, and each unit of labour, $3.The per unit cost of production in this economy is:_______A) $1.00. B) $.10. C) $.05. D) $.50.