Refer to the Accompanying Figure to Answer the Questions That

Refer to the accompanying figure to answer the questions that follow.

-Refer to the accompanying table,where Q represents the quantity produced,internal cost and external cost are given for various quantities,and P represents the price consumers are willing to pay for various quantities. The market equilibrium occurs where price is __________ and quantity is __________.

A) $4; 2
B) $8; 4
C) $10; 3
D) $10; 5
E) $12; 6