Answer the Question on the Basis of the Following Information

Multiple Choice

Answer the question on the basis of the following information.An economy is employing 2 units of capital,5 units of raw materials,and 8 units of labor to produce its total output of 640 units.Each unit of capital costs $10;each unit of raw materials,$4;and each unit of labor,$3. Refer to the information.If the per-unit price of raw materials rises from $4 to $8 and all else remains constant,the aggregate:

A) supply curve would shift to the left.
B) supply curve would shift to the right.
C) demand curve would shift to the left.
D) demand curve would shift to the right.