Use the Following General Linear Supply Function $Q _ { 5 } = 40 + 6 P - 8 P _ { I } + 10 F$

Multiple Choice

Use the following general linear supply function: $Q _ { 5 } = 40 + 6 P - 8 P _ { I } + 10 F$ where $Q _ { 5 }$ is the quantity supplied of the good,P is the price of the good, $P _ { I }$ is the price of an input,and F is the number of firms producing the good.If $$P _ { I }$$ = $20,F = 60,and the demand function is $Q _ { d } = 600 - 6 P$ the equilibrium price and quantity are,respectively,

A) P = $10 and Q = 640.
B) P = $8 and Q = 326.
C) P = $10 and Q = 540.
D) P = $8 and Q = 640.
E) none of the above.